Thursday

April 24, 2014

April 24, 2014

Number of results: 1,407

**rotational mechanics**

a thin rod of length 2R and mass M is standing vertically on a perfectly smooth floor. the state of equilibrium in which the rod at rest is unstable and the rod falls. FInd the trajectories that the various points of rod describe and velocity with which the upper end of rod ...
*Wednesday, March 31, 2010 at 11:46am by pramod*

**physics**

A 1.0-m thin rod of aluminum is laid end-to-end with a 1.0-m thin rod of steel. The rods are initially at 25 oC. What is the total length of both rods when heated to 450 oC?
*Monday, July 29, 2013 at 11:15pm by catherine*

**physics**

A uniform thin rod of length 0.55 m and mass 5.5 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is a rest when a 3.0-g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the ...
*Wednesday, April 9, 2014 at 12:33pm by Tsion*

**AP Physics**

A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the direction of...
*Friday, February 8, 2008 at 6:10pm by Darlene*

**Physics (please help!!!!)**

A thin uniform rod (length = 1.3 m, mass = 4.1 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 m L2. The rod is released when it is 55° below the horizontal. What is the angular acceleration ...
*Friday, March 25, 2011 at 7:36pm by HELP!!!!*

**Physics**

A thin uniform rod (length = 1.3 m, mass = 3.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is (1/3)mL2. The rod is released when it is 50° below the horizontal. What is the angular acceleration ...
*Tuesday, June 19, 2012 at 10:57am by Tim*

**physics**

A thin non-uniform rod of length L=2.00 m and mass M=9.00 kg is free to pivot about an axis at one end. The CM of the rod is at a distance d=1.30 m from that end as illustrated below. The rod's moment of inertia about an axis through its CM and parallel to the rotation axis is...
*Wednesday, October 31, 2012 at 7:48pm by sharkman*

**Physics**

A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 6.8 rad/s about an axis that is perpendicular to the left end of the rod and parallel...
*Saturday, November 17, 2012 at 7:45pm by greg*

**physics**

A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 7.1 rad/s about an axis that is perpendicular to the left end of the rod and parallel...
*Tuesday, April 8, 2014 at 9:40pm by Alex*

**Physics**

A thin rod of length L and mass M rotates about a vertical axis through its center with angular velocity w. The rod makes an angle B with the rotation axis. Determine the angular momentum of the rod.
*Friday, April 18, 2008 at 4:33am by Nik*

**Physics**

A thin rod (length = 1.03 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be ignored, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and ...
*Thursday, August 11, 2011 at 6:18pm by Kristi*

**College physics**

A thin glass rod is submerged in oil. What is the critical angle for light traveling inside the rod?
*Friday, July 30, 2010 at 7:09pm by ali*

**Physics**

A long thin rod of mass M = 2:00 kg and length L = 75:0 cm is free to rotate about its center as shown. Two identical masses (each of mass m = .403 kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10.0 ...
*Saturday, December 24, 2011 at 8:02pm by Lindsay*

**Physics- Angular Momentum**

A long thin rod of mass M=2.00 kg and length L=75.0 cm is free to rotate about its center. Two identical masses (each of mass m = .45kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10.0 rad/s. A) When ...
*Tuesday, December 28, 2010 at 3:22pm by Miki*

**INTRO TO PHYSICS**

Each of the following objects has a radius of 0.174 m and a mass of 2.16 kg, and each rotates about an axis through its center (as in the table below) with an angular speed of 37.3 rad/s. Find the magnitude of the angular momentum of each object. >Hoop of thin cylindrical ...
*Wednesday, October 31, 2012 at 12:09pm by Sandy*

**physics**

A thin uniform rod is rotating at an angular velocity of 7.70 rad/s about an axis that is perpendicular to the rod at its center. As the figure indicates, the rod is hinged at two places, one-quarter of the length from each end. Without the aid of external torques, the rod ...
*Saturday, November 19, 2011 at 1:57pm by meagan*

**physics**

A thin uniform rod is rotating at an angular velocity of 6.7 rad/s about an axis that is perpendicular to the rod at its center. As the drawing indicates, the rod is hinged at two places, one-quarter of the length from each end. Without the aid of external torques, the rod ...
*Tuesday, November 22, 2011 at 2:06pm by Anne*

**Angular Momentum**

A long thin rod of mass M = 2.00 kg and length L = 75.0 cm is free to rotate about its center as shown. Two identical masses (each of mass m = .421 kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10.0 ...
*Monday, July 11, 2011 at 10:37pm by jhay*

**Physics**

A thin 5.4-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. There are no other antinodes. The density and Young's modulus of this metal are, respectively, 5200 kg/m^3 and 7.9x10^10 N/m2. What is the frequency of the rod's ...
*Monday, February 11, 2013 at 11:14am by Patrick*

**physics please help**

One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has a length of 0.59 m and is uniform. It is hanging vertically straight downward. The end of the rod nearest the floor is given a linear speed v0, so ...
*Saturday, November 27, 2010 at 6:14pm by roni*

**Physics**

The left end of a 1-kg, 1.0 m long uniform thin rod is attached to a pivot, about which it can rotate freely. A force F is applied at the right end of the rod at 30 degree angle to hold the rod stationary in a horizontal position. What is the magnitude of the force F? I think ...
*Sunday, April 21, 2013 at 10:31am by gina*

**College Physics Help**

A thin rod (length = 1.10 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be ignored, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and ...
*Monday, March 5, 2012 at 7:04pm by Angela*

**Physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
*Tuesday, February 11, 2014 at 5:00pm by Molly*

**Physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
*Tuesday, February 11, 2014 at 7:07pm by Molly*

**Physics - please help!!..**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
*Wednesday, February 12, 2014 at 8:48am by Molly*

**Physics**

A long, thin rod (length = 4.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +5.0 µC point charge is fixed to one end of the rod, while a -5.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external ...
*Saturday, January 26, 2013 at 3:03am by Amy*

**Physics**

A long, thin rod (length = 4.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +5.0 µC point charge is fixed to one end of the rod, while a -5.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external ...
*Saturday, January 26, 2013 at 2:03pm by Amy*

**physics**

A mobile is constructed from a thin rod of mass 50 g and length 50 cm. Two hanging masses are positioned at each end of the rod. The mass of one of the hanging masses is 100 g. What must be the mass of the other hanging mass so that the mobile is in static equilibrium with ...
*Saturday, December 4, 2010 at 5:29am by Qay*

**physics**

A mobile is constructed from a thin rod of mass 50 g and length 50 cm. Two hanging masses are positioned at each end of the rod. The mass of one of the hanging masses is 100 g. What must be the mass of the other hanging mass so that the mobile is in static equilibrium with the...
*Saturday, December 4, 2010 at 4:02pm by Qay*

**physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
*Wednesday, February 12, 2014 at 1:45pm by Naya*

**AP Physics**

A long, straight wire carries a current of 740 mA. A thin metal rod 45 cm long is oriented perpendicular to the wire and moves with a speed of 1.8 m/s in a direction parallel to the wire. What are the size and direction of the emf induced in the rod if the nearest point of the...
*Saturday, April 9, 2011 at 4:44pm by Martina*

**Physics**

A thin rod L = 9.0 cm long is uniformly charged and has a total charge of 4.4 nC. Find the magnitude of the electric field at a point P located at a distance R = 13.5 cm from the center of the rod when: (a) The point P lies along the axis of the rod Electric field =___kN/C (b...
*Monday, July 9, 2012 at 11:11pm by Rain*

**Physics**

One end of a thin uniform rod, 1.00m in length, is attached to a pivot. The rod is free to rotate about the pivot without friction or air resistance. Initially, it is hanging straight down (the "6 o' clock position). Then the lower tip is given an initial horizontal speed of ...
*Friday, December 4, 2009 at 2:55am by John*

**physics**

A 4.00 kg mass and a 3.00 kg mass are attached to opposite ends of a thin 32.2 cm long horizontal rod. The system is rotating at angular speed omega = 4.70 rad/s about a vertical axle at the center of the rod. Determine the kinetic energy K of the system.
*Tuesday, November 20, 2012 at 10:11pm by Anonymous*

**science**

2. A thin rod of length 10m is in the x-y plane parallel to the x axis. Its centre is at the point (3,2) .A force of 100 N in the x-y plane is applied at its right end at an angle of 30o from the x-axis. An equal and opposite force is applied at its other end. (i) Make a ...
*Sunday, August 29, 2010 at 11:02am by sant*

**physics**

The free-body diagram in the drawing shows the forces that act on a thin rod. The three forces are drawn to scale and lie in the plane of the screen. Are these forces sufficient to keep the rod in equilibrium, or are additional forces necessary I assume this is what I just ...
*Monday, May 7, 2007 at 12:29pm by Panda*

**physics**

A toy consisting of two balls, each m = 0.56 kg, at the ends of a l = 0.73 m long, thin light-weight rod is shown below. Find the moment of inertia of the toy. The moment of inertia is to be found about the center of the rod.
*Thursday, January 10, 2013 at 7:29pm by Anonymous*

**Physics**

Two 2.00kg balls are attached to the ends of a thin rod length 50.0cm and negligible mass. The rod is free to rotate about a horizontal axis at the center, without friction. With the rod horizontal, a 50.0 gram glob of putty drops onto one of the balls, hitting it with a speed...
*Tuesday, January 4, 2011 at 8:27am by Lil*

**physics**

A thin 2.82 m long copper rod in a uniform magnetic field has a mass of 44.2 g. When the rod carries a current of 0.238 A, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s2 . What is the field strength of the magnetic field? Answer in units of T.
*Tuesday, April 19, 2011 at 12:16am by maria*

**PHYSICS**

A thin 2.82 m long copper rod in a uniform magnetic field has a mass of 44.2 g. When the rod carries a current of 0.238 A, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s2 . What is the field strength of the magnetic field? Answer in units of T.
*Tuesday, April 19, 2011 at 10:10pm by Leslie*

**Physics(please help)**

Four very thin rods, each 8.3 m long, are joined to form a square. The center of mass of the square is located at the coordinate origin. The rod on the right is then removed. What are the x- and y-coordinates of the center of mass of the remaining three-rod system? I have no ...
*Sunday, June 3, 2012 at 2:19pm by Hannah*

**Physics**

A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through one end of the rod. The moment of inertia of the rod about this axis is 4.0 kg m2. The center of mass of the rod is 1.2 m from the ...
*Sunday, October 28, 2012 at 7:35am by Anonymous*

**College Physics**

A rod of mass 4.3 kg and length 4.3 m hangs from a hinge as shown in Figure P9.28. The end of the rod is then given a “kick” so that it is moving at a speed of 2.3 m/s. How high will the rod swing? Express your answer in terms of the angle (in degree) that the rod makes with ...
*Tuesday, October 18, 2011 at 8:46pm by Anon*

**PHYSICS**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C toward the rod away from the rod
*Monday, September 16, 2013 at 9:49pm by suhani*

**physics**

Two 2.3 kg balls are attached to the ends of a thin rod of negligible mass, 65 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 44 gm wad of wet putty drops onto one of the ...
*Tuesday, November 16, 2010 at 12:41pm by Putty wad*

**college physics**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C toward the rod away from the rod
*Wednesday, September 18, 2013 at 4:14am by suhani*

**Physics**

The figure below shows a thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle θ and released. (a) What is the speed of the ball...
*Saturday, July 24, 2010 at 8:32pm by Terra*

**physics**

A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so 0.5L is above the ...
*Sunday, March 6, 2011 at 11:05pm by kinjal*

**physics**

A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so 0.5L is above the ...
*Sunday, March 6, 2011 at 11:06pm by kinjal*

**physics**

Four very thin rods, each 5.9 m long, are joined to form a square, as part (a) of the drawing shows. The center of mass of the square is located at the coordinate origin. The rod on the right is then removed, as shown in part (b) of the drawing. What are the x- and y-...
*Monday, February 27, 2012 at 6:50pm by Day*

**Physics**

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ...
*Tuesday, October 23, 2012 at 10:24am by Laurie*

**Physics**

A 600 N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 90-N rod. The left end the rod is supported by a hinge and the right end is supported by a thin cable making a 30.0° angle with the vertical. (a) Find the tension...
*Friday, March 19, 2010 at 8:33pm by Ana*

**physics**

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ...
*Monday, October 22, 2012 at 4:39pm by laurie*

**Physics**

A small bead of mass m is free to slide along a long, thin rod without any friction. The rod rotates in a horizontal plane about a vertical axis passing through its end at a constant rate of f revolutions per second. Show that the displacement of the bead as a function of time...
*Thursday, February 10, 2011 at 4:48pm by Roger Cole*

**Physics**

A small bead of mass m is free to slide along a long, thin rod without any friction. The rod rotates in a horizontal plane about a vertical axis passing through its end at a constant rate of f revolutions per second. Show that the displacement of the bead as a function of time...
*Friday, February 11, 2011 at 10:55am by 0255872*

**Physics**

Some insects can walk below a thin rod (such as a twig) by hanging from it. Suppose that such an insect has mass m and hangs from a horizontal rod as shown in the figure, with angle θ = 37°. Its six legs are all under the same tension, and the leg sections nearest the ...
*Monday, February 17, 2014 at 2:49pm by Robin*

**physics Classical Mechanics**

a) Two pendulums consist of a very thin string at the end of which hangs a mass which is much larger than the mass of the rod. In pendulum #1, the rod is made of copper. In pendulum #2, the rod is made of invar. What is the percentage in the period of the pendulums when the ...
*Saturday, December 14, 2013 at 12:09pm by Hil*

**College Physics**

A small bead of mass m is free to slide along a long, thin rod without any friction. The rod rotates in a horizontal plane about a vertical axis passing through its end at a constant rate of f revolutions per second. Show that the displacement of the bead as a function of time...
*Sunday, February 13, 2011 at 11:06pm by Roger Cole*

**college physics**

I don't know where to begin with this question. Could someone help me please? A rod of mass 4.1 kg and length 1.6 m hangs from a hinge as shown in the figure below. The end of the rod is then given a "kick" so that it is moving at a speed of 5 m/s. How high will the rod swing...
*Friday, December 2, 2011 at 11:22am by peter*

**Physics/Math**

A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released. (a)What is the speed of the ball at the lowest point if L = 2....
*Wednesday, March 7, 2007 at 1:09am by Technoboi11*

**physics**

A uniform rod of mass M = 0.245kg and length L = 0.49m stands vertically on a horizontal table. It is released from rest to fall. (a) Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on ...
*Tuesday, October 30, 2012 at 11:30am by jay*

**physics**

A rigid rod holds a restaurant sign horizontally from the side of a building. The force due to gravity acting on the sign is 165N with the angle between the sign and the rod being 50 degrees. Ignoring the weight of the rod what is the magnitude of the tension in the rod?
*Wednesday, February 6, 2013 at 11:39am by Carolyn*

**Physics **

According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Assume the speed quoted is that of the end of the rod. What is the centripetal acceleration of the ...
*Sunday, January 13, 2013 at 9:42pm by Emily*

**physics**

Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on the rod as it makes an angle θ = 49.6° with respect to the vertical. b) If the rod falls onto the table without slipping, find the ...
*Sunday, April 3, 2011 at 7:56pm by please help!!!!*

**Physics**

A copper rod (length = 1.3 m, radius = 3.70 10-3 m) hangs down from the ceiling. A 8.3-kg object is attached to the lower end of the rod. The rod acts as a "spring", and the object oscillates vertically with a small amplitude. Ignoring the rod's mass, find the frequency f of ...
*Friday, November 30, 2012 at 8:02pm by Elizabeth*

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?
*Tuesday, October 23, 2012 at 10:26am by Laurie*

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?
*Wednesday, October 24, 2012 at 5:07pm by Laurie*

**physics**

a rod supports a 2.35 kg lamp. a)what is the magnitude of the tension in the rod? b)calculate the components of the force that the bracket exerts on the rod.
*Sunday, December 4, 2011 at 12:44pm by jessica*

**physics**

True or false questions a)Rubbing a polythene rod with a duster gives the rod extra negative charge. b)Rubbing a polythene rod with a duster takes away positive charge from the duster. c)The duster will have the same charge as the polythene rod it has rubbed. d)The duster will...
*Sunday, February 8, 2009 at 1:35am by Victor*

**physics**

An aluminum rod is 21.5 cm long at 20°C and has a mass of 350 g. If 12500 J of energy is added to the rod by heat, what is the change in length of the rod?
*Monday, November 8, 2010 at 9:20am by Erica--help!*

**Waves**

a long fishing rod is kept upright .A boat engine causes the rod to vibrate.Mary speculates that the end of the rod moves to and fro 20 times in 1 minute.The amplitude of the vibrtion is 0.15m.Calculate the speed of the vibration at the end of the fishing rod
*Wednesday, June 15, 2011 at 9:37am by Sivashen*

**physics **

If an observer is traveling parallel to a rod at twice the speed of the rod, what is does the observer perceive the length to be? Choose one answer. a. The length of the rod remains the same. b. The length of the rod will become twice its original value. c. The length of the ...
*Saturday, April 30, 2011 at 12:05am by ashley --*

**physics **

If an observer is traveling parallel to a rod at twice the speed of the rod, what is does the observer perceive the length to be? Choose one answer. a. The length of the rod remains the same. b. The length of the rod will become twice its original value. c. The length of the ...
*Saturday, April 30, 2011 at 10:24am by ashley --*

**Physics**

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D? No one has answered this question yet.
*Monday, October 22, 2012 at 8:35pm by Laurie*

**physics**

A rod of length L = 1.2 m pivots freely about one end. The rod is held horizontally and released, with no intial velocity. Find the angular velocity of the rod as it passes through the vertical orientation. (Use conservation of energy. The rotational inertia of a rod like this...
*Wednesday, December 12, 2012 at 1:37am by Karan*

**physics**

A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period = 5.97 s), because the mass of the sphere (lead) is much greater than the mass of the...
*Wednesday, November 17, 2010 at 10:27pm by Dawb*

**Physics**

A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch?
*Thursday, November 22, 2012 at 11:40pm by Coco*

**Physics**

A thin uniform rod has mass M = 0.5 kg and length L= 0.49 m. It has a pivot at one end and is at rest on a compressed spring as shown in (A). The rod is released from an angle θ1= 55.0o, and moves through its horizontal position at (B) and up to (C) where it stops with &#...
*Tuesday, February 11, 2014 at 4:21pm by Tomas*

**Physics 121**

The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
*Saturday, May 5, 2012 at 9:06pm by Max*

**Physics 121**

The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
*Sunday, May 6, 2012 at 8:14pm by Beth*

**physics**

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...
*Sunday, February 19, 2012 at 9:43am by janny*

**Physic**

The free-body diagram in the drawing shows the forces that act on a thin rod. The three forces are drawn to scale and lie in the plane of the screen. Are these forces sufficient to keep the rod in equilibrium, or are additional forces necessary f3 ' ' ' f1 ------>---rod...
*Monday, May 7, 2007 at 12:37pm by Panda*

**Physics**

A 1.2m -long steel rod with a diameter of 0.50cm hangs vertically from the ceiling. An auto engine weighing 4.7kN is hung from the rod. By how much does the rod stretch?
*Wednesday, March 5, 2014 at 7:46pm by Georgey*

**physics**

A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by the ...
*Monday, October 31, 2011 at 10:21pm by Andrea*

**Physics**

A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released. What is the speed of the ball at the lowest point if L = 2.20 m...
*Friday, March 9, 2007 at 10:48pm by Technoboi11*

**Physics**

A charge rod is brought near a pile of tiny plastic sphere. Some of the spheres are attracted to the rod, but as they touch the rod, they are flung into different directions. Explain. Thanks :)
*Friday, August 31, 2012 at 11:17am by Celina*

**physics**

Resonance of sound waves can be produced within an aluminum rod by holding the rod at its midpoint and stroking it with an alcohol-saturated paper towel. In this resonance mode, the middle of the rod is a node while the ends are antinodes; no other nodes or antinodes are ...
*Monday, December 6, 2010 at 1:56pm by Erica--help!*

**physics**

Figure 8-31 shows a ball with mass m = 1.0 kg attached to the end of a thin rod with length L = 0.56 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. (a) What initial speed must be given the ball so that it reaches the ...
*Monday, February 18, 2008 at 11:30am by dawn*

**Physics, please help:)**

A charge rod is brought near a pile of tiny plastic sphere. Some of the spheres are attracted to the rod, but as they touch the rod, they are flung into different directions. Explain. Thanks :)
*Saturday, September 1, 2012 at 2:23am by Celina*

**math**

Uniform rod AB with end B resting against rough vertical wall. Coefficient of friction between wall and rod is μ. Rod is 2m long and has mass 3kg. Rod is kept in limiting equilibrium by a light inextensible string, one end of which is attached to the end A of the rod and ...
*Wednesday, April 23, 2014 at 10:01am by Michael*

**physics help!**

A small 520-gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.5 m. Calculate the moment of inertia of the ball about the center of the circle. Then calculate the torque needed to keep the ball rotating at constant angular velocity if air ...
*Thursday, March 25, 2010 at 10:39am by Anonymous*

**physics**

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...
*Sunday, February 19, 2012 at 3:20pm by janny*

**physics**

The moment of inertia of thin uniform rod of mass i and length L about an axis passing through a point midway between the centre and on end perpendicular to its length is --------------
*Wednesday, February 27, 2013 at 12:09am by prasad*

**Physics**

A rod made from insulating material carries a net charge, while a copper sphere is neutral. The rod and the sphere do not touch. (a) Is it possible for the rod and the sphere to attract one another? (b) Is it possible for the rod and the sphere to repel one another? Explain ...
*Friday, September 21, 2007 at 2:33pm by Mary*

**physics**

A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by the ...
*Monday, October 31, 2011 at 10:21pm by Andrea*

**physics**

2. Rod A, which is 30 cm long, expands by 0.045 cm when heated from 0°C to 100°C. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long is made up of the materials of rod A and B, connected end to end. It expands by 0.065...
*Monday, February 13, 2012 at 9:33am by Anonymous*

**Physics**

An iorn rod (a=11.8 x 10^-6C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?
*Wednesday, July 31, 2013 at 7:49pm by Jason*

**physics**

An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?
*Thursday, August 1, 2013 at 10:46am by Jason*

**physics**

An iron rod has a length of 1000 meters (or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?
*Friday, November 1, 2013 at 5:43pm by chris*

**physics**

the moment of inertia of a thin uniform rod of mass M and length L about an axis passing through a point midway between the centre and one end perpendicular to its length is -----------------------------------
*Tuesday, February 26, 2013 at 8:33am by maheshwari*

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