Wednesday

April 16, 2014

April 16, 2014

Number of results: 981

**Physic **

A block (mass 2.4 kg) is hanging from a massless cord that is wrapped around a pulley -3 2 (moment of inertia of the pulley = 1.3 x 10 kg·m ), as the drawing shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the pulley is allowed to ...
*Monday, February 4, 2013 at 2:03pm by Jess*

**college trig**

find the radius of a pulley if rotating the pulley 108.03 degrees raises the pulley 37.3mm
*Monday, July 15, 2013 at 1:34pm by brandi*

**physics**

A block (mass = 2.9 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 10-3 kg·m2), as the figure shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the pulley is allowed to rotate as the block...
*Wednesday, November 3, 2010 at 4:25pm by danica*

**Physics, please help me today.**

four pulleys are connected by two belts. Pulley A (radius 15cm) is the drive pulley and it rotates at 10 rad/s. Pulley B (radius 10 cm) is connected by belt 1 to pulley A. Pulley B' (radius 5cm) is concentric with pulley B and is rigidly attached to it. Pulley C (radius 25cm) ...
*Friday, November 17, 2006 at 10:48am by Dawn*

**Help Math**

A circular pulley with a radius of 10 cm is turning at 12 revolutions per minute. How fast is a point on the edge of the pulley rising when it is 5 cm higher than the center of the pulley?
*Monday, January 9, 2012 at 4:32pm by Jordan*

**math (Calculus)**

A circular pulley with a radius of 10 cm is turning at 12 revolutions per minute. How fast is a point on the edge of the pulley rising when it is 5 cm higher than the center of the pulley?
*Monday, January 9, 2012 at 4:15pm by Jordan*

**physics (tension in strin and acceleration of syst**

two bodies of 9kg and 5.7kg are attached with ends of a string which passes over a pulley so that both bodies move vertically starting from rest at equal heights,lighter body hits pulley in 1.2sec.find length of string and speed with which it hits pulley.diameter of pulley is ...
*Sunday, August 21, 2011 at 3:47am by ahsan asghar*

**Physics**

A pulley system os being used to raise a load. The rope begins at the ceilings, goes down, round a pulley on the load, up to a pulley on the ceiling, back down and around a second pulley on the load, and up to a sheave (a motor driven pulley) on the ceiling. The rope is ...
*Sunday, July 15, 2012 at 8:26am by Alex*

**Physics**

A special pulley has two discs with radii R1 = .8 m and R2 = .35 m. A rope from the R2 disc connects the pulley to a wall and a rope from the R1 disc connects the pulley to a hanging mass. The axle is frictionless. The total mass of the pulley is 15 kg. a. If the hanging mass ...
*Monday, April 23, 2012 at 7:57pm by Charlie*

**physics**

A pulley rotating in the counterclockwise direction is attached to a mass suspended from a string. The mass causes the pulley's angular velocity to decrease with a constant angular acceleration α = -2.2 rad/s2. If the pulley's initial angular velocity is ω = 5.37 rad...
*Thursday, November 4, 2010 at 8:28pm by aok*

**Physics**

An object (m=2.85 kg) is attached to a disk-shaped pulley. The diameter of the pulley is 0.242 and its weight is 7.272 N. Suppose the object is allowed to fall (a) What is its linear acceleration? (b) What is the angular acceleration of the pulley? (c) How far does the bucket ...
*Tuesday, November 27, 2012 at 4:51pm by Hank*

**physics**

A rope goes over a circular pulley with a radius of 6.3 cm. If the pulley makes four revolutions without the rope slipping, what length of rope passes over the pulley?
*Wednesday, January 5, 2011 at 5:33pm by melissa*

**Physics**

A rope goes over a circular pulley with a radius of 5.5 If the pulley makes 6 revolutions without the rope slipping, what length of rope passes over the pulley?
*Tuesday, June 18, 2013 at 9:16am by Anonymous*

**Physics **

A 3.30-kN piano is lifted by three workers at a constant speed to an apartment 28.8 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 197 W of power, and the pulley system is 75.0% efficient (so that 25.0% of the ...
*Sunday, June 17, 2012 at 8:01pm by Kristin*

**science**

A 59-kg housepainter stands on a 13-kg aluminum platform. The platform is attached to a rope that passes through an overhead pulley, which allows the painter to raise herself and the platform. (Ignore the mass of the pulley and any friction in the pulley.)
*Sunday, November 5, 2006 at 11:19am by physics*

**math**

the constant angular acceleration of pulley is 4rad/s2, angular speed 3 rad/s, determine the radius of pulley if the total acceleration of a print on the rim of the pulley is 3.5m/s2
*Tuesday, July 31, 2012 at 12:35am by ajay*

**physics**

A 15.0 kg mass and a 10.0 kg mass are suspended by a pulley that has a radius of 10.0 cm and a mass of 3.0 kg. The cord has negligible mass and causes the pulley to rotate without slipping. The puller is frictionless and may be treated as a uniform solid cylinder. Note that ...
*Thursday, June 2, 2011 at 11:03pm by Samantha*

**Physics**

A pulley is holding two masses-0.5 kg and 2.0 kg. The system is in static equilibrium; the pulley is frictionless; the string is massless. What is the tension of the string holding the pulley?
*Wednesday, October 20, 2010 at 2:26pm by Lynn*

**Physics**

The two blocks in the figure are connected by a massless rope that passes over a pulley. The pulley is 17 in diameter and has a mass of 1.9 . As the pulley turns, friction at the axle exerts a torque of magnitude 0.40 . If the blocks are released from rest, how long does it ...
*Monday, February 21, 2011 at 8:45pm by Saif sidd*

**Thermo engineering**

The driveshaft of a building’s air-handling fan is turned at 300 RPM by a belt running on a 0.3-m-diameter pulley. The net force applied by the belt on the pulley is 2000 N. determine the torque applied by the belt on the pulley, in N.m, and the power transmitted, in kW.
*Tuesday, May 10, 2011 at 3:18pm by Justin*

**Physics**

Two blocks hang from strings going around pulleys of different diameter that are connected, as shown in the figure. The large pulley has a radius of R = 9.0 cm and and the small pulley has a radius of r = 2.3 cm. The mass of the block that hangs from the small pulley is m = 3....
*Sunday, February 3, 2013 at 2:41pm by Anonymous*

**pulley and rotation**

Two masses, mA = 35.0 kg and mB = 42.0 kg, are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius 0.50 m and mass 4.8 kg. Initially mA is on the ground and mB rests 2.5 m above the ground. If the system is released, use ...
*Thursday, March 11, 2010 at 8:11pm by Anonymous*

**college physics**

an atwood machine is constructed by mounting a well-lubricated pulley (not necessarily a ring/disc), whose radius is 6.00cm on an axle and passing a rope over the pulley. Each end of the rope is attached to a different mass of 3.0 kg and 2.0kg so they both hang vertically. ...
*Tuesday, June 25, 2013 at 9:11pm by kim*

**physics**

One end of a light spring with force constant 300 N/m is attached to a vertical wall. A light string is tied to the other end of the horizontal spring. The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.00 cm. The pulley is free to ...
*Monday, November 30, 2009 at 6:10pm by caroline*

**physics**

The figure below shows two objects with masses m and M which are connected with a taut string running over a pulley. The pulley rotates without friction. The two masses are given as M = 393 g and m = 181 g. A second taut string connects the heavier object vertically from the ...
*Sunday, September 27, 2009 at 1:02pm by m2a2*

**physics**

A pulley is suspended by a Cord (C). on one end of the pulley there is a 1.2 kg block and on the other is a 3.2 kg block.Determine the tension in this cord after the masses are released and before one hits the ground. Ignore the mass of the pulley and cords
*Thursday, February 14, 2013 at 10:05pm by Anonymous*

**dynamics**

13. The constant angular acceleration of a pulley is 4 rad/s2 and its angular speed its 3 rad/s. Determine the radius of the pulley if the total acceleration of a print on the rim of the pulley is 3.5m/s2.
*Friday, August 3, 2012 at 1:08pm by shivankar*

**dynamics**

13. The constant angular acceleration of a pulley is 4 rad/s2 and its angular speed its 3 rad/s. Determine the radius of the pulley if the total acceleration of a print on the rim of the pulley is 3.5m/s2.
*Friday, August 3, 2012 at 1:08pm by ajay*

**Physics**

A cable passes over a pulley. Because of friction, the tension in the cable is not eh same on opposite side of the pulley. The force in one side is 110 N, and the force on the other side is 100 N. Assume that the pulley is a uniform disk of mass 2.1kg and radius 0.21. ...
*Friday, October 15, 2010 at 2:23pm by Rod*

**Physics**

Use a conservation of energy approach, and include the rotational kinetic energy of the pulley, KEr KEr = (1/2)I w^2 = (1/4) m V^2 The radius of the pulley will cancel out. m is the mass of the pulley. potential enegy change = (1/2)[m1 + m2 + (m/2)] *V^2 I would need to see ...
*Monday, March 8, 2010 at 10:28pm by drwls*

**Physics**

The pulley system shown in the figure is used to lift a 37 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is...
*Thursday, October 25, 2012 at 9:20pm by Andrea*

**physics**

Two blocks are connected by a massless rope that passes over a pulley. M1= 2 kg and M2= 4 kg. The pulley is 12cm in diameter and has a mass of 2kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.5 Nm. if the blocks are released from rest, how long ...
*Wednesday, December 1, 2010 at 1:11pm by Blanche*

**physics**

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and its speed after it ...
*Tuesday, February 11, 2014 at 7:11pm by John*

**physics**

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and its speed after it ...
*Wednesday, February 12, 2014 at 8:51am by Danny*

**Help - physics**

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and its speed after it ...
*Wednesday, February 12, 2014 at 12:20pm by Danny*

**Physics**

If the system is in static equilibrium, there is no motion for any of the items. So the tension of the string holding the pulley is Σmass*acceleration due to gravity =(0.5kg+2.0kg+0kg(string)+mass of pulley)*g =(2.5kg+mass of pulley)*g
*Wednesday, October 20, 2010 at 2:26pm by MM*

**physics help pleease!!**

A rope goes over a circular pulley with a radius of 6.3 cm. If the pulley makes four revolutions without the rope slipping, what length of rope passes over the pulley? how can i find distance if the only variable given is radius and revolutions?
*Wednesday, January 5, 2011 at 5:12pm by lissa*

**Physics**

A massless string runs around two massless, frictionless pulleys, where one pulley is attached to the ceiling, and the other is suspended with a mass m. An object with mass m = 17 kg hangs from one pulley. A force F is exerted on the free end of the string to lift the object ...
*Tuesday, November 17, 2009 at 10:05pm by Nikita*

**PHYSICS**

A block of mass 0.86 kg is suspended by a string which is wrapped so that it is at a radius of 0.061 m from the center of a pulley. The moment of inertia of the pulley is 4.60×10-3 kg·m2. There is friction as the pulley turns. The block starts from rest, and its speed after it...
*Sunday, October 21, 2012 at 7:58pm by Emily *

**physics**

Consider the system shown in the figure below with m1 = 30.0 kg, m2 = 13.7 kg, R = 0.110 m, and the mass of the pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.60 m above the floor when it is released from rest. The pulley axis is frictionless. The ...
*Saturday, May 14, 2011 at 10:18am by mimi*

**Physics**

The two blocks in the figure below, m1 = 1.2 kg and m2 = 4.8, are connected by a massless rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.38 N·m. If the blocks ...
*Wednesday, November 21, 2012 at 8:36pm by Alex*

**physics**

An Atwood Machine has a pulley of radius Rpulley = 0.25m, and mass Mpulley = 6.0 kg with two blocks with masses m1 = 5.0 kg, and m2 = 10.0 kg. Treat the pulley as a uniform disk. a) Find the acceleration of each block. b) Find the angular acceleration of the pulley. c) Find ...
*Monday, December 11, 2006 at 2:54pm by nicole*

**Physics 121**

The pulley has an inner radius of 0.35m and an outer radius of 0.65m. It has a mass of 1.8kg. A string wrapped around the inner part of the pulley is fastened to the ceiling. A second string wrapped around the outer part of the pulley is fastened to a block. Determine the mass...
*Saturday, May 5, 2012 at 9:07pm by Lee*

**Physics**

A fixed 0.15 kg solid-disk pulley with a radius of 0.065 m is acted on by a net torque of 5.2 m·N. What is the angular acceleration of the pulley?
*Wednesday, November 3, 2010 at 10:43pm by Katherine*

**Physics**

A fixed 0.15 kg solid-disk pulley with a radius of 0.075 m is acted on by a net torque of 6.8 m·N. What is the angular acceleration of the pulley?
*Saturday, December 11, 2010 at 4:23pm by Angela*

**physics**

A fixed 0.16 kg solid-disk pulley with a radius of 0.070 m is acted on by a net torque of 5.0 m * N. What is the angular acceleration of the pulley?
*Monday, April 11, 2011 at 9:09pm by Dorian*

**Physics**

The pulley system shown in the figure is used to lift a 52-{\rm kg} crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.5 m/s^2. Determine the tension in ...
*Saturday, March 10, 2012 at 1:58pm by JO*

**Physics helppp**

In the figure below, three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The masses are mA = 30.0 kg, mB = 40.0 kg, mC = 28.0 kg. The image is a horizontal pulley, with mass mA on the left, and...
*Wednesday, July 14, 2010 at 12:02pm by Sam*

**physics need help plz**

there is a mass hanging down through a pulley and the at the right there is another pulley and than the rope is at the left and F force applied I don;t know how to explain it n i cant paste it
*Friday, June 8, 2012 at 10:11am by Akbar*

**Trig**

A pulley with a diameter of 24 inches is driven by a belt which is moving 1045 ft/min. How many revolutions per minute are made by the pulley?
*Tuesday, March 19, 2013 at 3:16pm by Katelyn*

**physics**

"By means of a rope, whose mass is negligible, two blocks (mass: 11kg and 44 kg) are suspended over a pulley. The pulley can be treated as a uniform solid cylindrical disk. The downward acceleration of the 44 kg block is observed to be exactly one half the acceleration due to...
*Friday, April 1, 2011 at 2:36pm by Seth *

**physics**

"By means of a rope, whose mass is negligible, two blocks (mass: 11kg and 44 kg) are suspended over a pulley. The pulley can be treated as a uniform solid cylindrical disk. The downward acceleration of the 44 kg block is observed to be exactly one half the acceleration due to ...
*Sunday, April 3, 2011 at 1:53am by Seth *

**i need help i couldnt figure this out...**

A block of mass m = 3 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 6 kg and radius R = 6 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*Saturday, April 2, 2011 at 6:20pm by samJoint*

**physics**

Two masses m and 2m are attached with each other by a rope passing over a frictionless and massless pulley. If the pulley is accelerated upwards with an acceleration ‘a’, what is the value of T?
*Tuesday, February 1, 2011 at 1:49am by nikhil*

**physical**

The pail and its contents have a mass of 60 kg. If the cable is 15 m long, determine the elevation of the pulley for equilibrium. Neglect the size of the pulley at A
*Wednesday, October 10, 2012 at 5:37am by taher *

**physics**

An Atwood's machine consists of blocks of masses m1 = 13.0 kg and m2 = 19.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 7.30 kg and radius r = 0.200 m. The block of mass m2 is allowed to drop, and the cord ...
*Wednesday, November 9, 2011 at 5:17pm by Anonymous*

**physics**

block 1 has mass m1 = 480 g, block 2 has mass m2 = 540 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. When released from rest, block 2 falls 76 cm in 5.2 s (without the cord slipping on the pulley). What is the pulley's rotational inertia? ...
*Monday, April 1, 2013 at 8:04am by ANS*

**physics**

block 1 has mass m1 = 480 g, block 2 has mass m2 = 540 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. When released from rest, block 2 falls 76 cm in 5.2 s (without the cord slipping on the pulley). What is the pulley's rotational inertia? ...
*Tuesday, April 2, 2013 at 5:30am by Ashley*

**maths**

A pulley revolving at 200 revolutions per minute has a diameter of 15 inches. It is belted to a second pulley which revolves at 150 revolutions per minute. Find the diameter, in inches, of the second pulley. not just answer, please
*Thursday, August 15, 2013 at 6:25pm by Tomas*

**physics**

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is the magnitude of the ...
*Sunday, January 9, 2011 at 4:20pm by melissa*

**physics**

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is the magnitude of the ...
*Sunday, January 9, 2011 at 4:32pm by lissa*

**science**

The driving pulley of a motorbike rotates at 3 r/s and has a diameter of 300mm. The pulley exerts an effective force of 2000N at a point on its periphery. Calculate the turning moment and the power in Kw .
*Wednesday, March 6, 2013 at 3:03pm by leslie*

**physics**

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is the magnitude of the ...
*Sunday, January 9, 2011 at 4:37pm by i need help please!*

**Physics**

Consider the system shown in the figure with m1 = 25.00 kg, m2 = 10.20 kg, R = 0.18 m, and the mass of the uniform pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.00 m above the floor when it is released from rest. The pulley axis is frictionless. The...
*Wednesday, April 8, 2009 at 7:49pm by Chris*

**Physics**

Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the acceleration of the ...
*Sunday, November 28, 2010 at 7:33pm by Garry*

**Physics**

Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the acceleration of the ...
*Sunday, November 28, 2010 at 8:10pm by Stacy*

**Math**

If the ratio of two pulleys, A and B is 4:3, and pulley B has a length of 13.5 inches, how long is pulley A? [a] inches how do i figure this
*Friday, May 16, 2008 at 6:07pm by LT*

**Physics**

Note: The left-hand mass is equal to the sum of the other two masses. A massless pulley is attached to the ceiling,in a uniform gravitational field, and rotates with no friction about its pivot. Another massless pulley is attached to the end of the cord on the right and ...
*Tuesday, October 1, 2013 at 9:58pm by DW*

**physics**

When you want to pull downward to lift something, the main advantage of passing a rope upward and through a single pulley,rather than just up over the branch of a tree ,is that the pulley?
*Wednesday, March 7, 2012 at 10:31pm by April*

**science**

when you want to pull downward to lift something, the main advantage of passing a rope upward and through a single pulley, rather than just up over the branch of a tree, is that the pulley does what?
*Saturday, July 21, 2012 at 8:10pm by kristi*

**dynamics**

the normal acceleration of a particle on the rim of a pulley 10 ft in diameter is constant @ 8000 ft/s^2. determine the speed of the pulley in rpm
*Monday, February 25, 2013 at 3:07am by fatz*

**math**

The 2 pulleys in the figure have radii of 15 cm and 8 cm, respectively. The larger pulley rotates 25 times in 36 seconds find the angular velocity of each pulley in radians per second. Find angular velocity of each pulley in radians per second.
*Thursday, December 2, 2010 at 6:29am by confused*

**science**

You have a pulley 13.9 cm in diameter and with a mass of 1.7 kg. You get to wondering whether the pulley is uniform. That is, is the mass evenly distributed, or is it concentrated toward the center or the rim? To find out, you hang the pulley on a hook, wrap a string around it...
*Tuesday, October 22, 2013 at 3:05pm by Colin*

**physics**

A pulley system is 76% efficient. If a 9000 kg box is lifted a distance of 8 m by a force of 700 N, how much rope is pulled from the pulley system?
*Tuesday, November 8, 2011 at 11:56pm by luke*

**Physics**

The equation for the torque is the same as for the pulley. E.g., the puylling force of the quadriceps muscle acts as a pulley around the rotula, so can I calculate as a torque movement, knowing that the T = Nm (f x r). Thank you
*Friday, September 3, 2010 at 8:45am by Emeric*

**Physics please help! check if its correct**

A 3.00 kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 8.00 kg cylindrical pulley. The inner diameter of the pulley is 60.0 cm, while the outer diameter is 1.00 m. The system is released from rest, and there is no friction at the axle of the...
*Sunday, February 26, 2012 at 4:35pm by Brit*

**physics**

Spring scale A is attached to the floor and a rope runs vertically upward, loops over the pulley, and runs down on the other side to a 99 N weight as shown (in original problem). Scale B is attached to the ceiling and the pulley is hung below it. What are the readings of the ...
*Saturday, November 20, 2010 at 12:56pm by anonymous*

**physics/ torques**

A block of mass m = 5 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 4 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*Sunday, April 3, 2011 at 7:52pm by HELP!!!!*

**physics**

A block of mass m = 5 kg is attached to a spring (k = 28 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 3 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*Friday, March 25, 2011 at 7:03pm by Anonymous*

**physics**

A block of mass m = 5 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 4 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*Sunday, April 3, 2011 at 10:06pm by Anonymous*

**phsyics**

a 100 kg block being released from rest over a pulley from a height of 1.0 m. It takes 0.98 s to reach the floor. What is the mass of the block hanging on the other side of the pulley.
*Thursday, September 20, 2012 at 8:59pm by mike*

**Math**

A pair of belted pulleys have diameters of 20 inch and 16 inch respectively.If the larger pulley turns at 2000 rpm, how fast will the smaller pulley turn.
*Monday, February 3, 2014 at 9:28pm by Chelsey*

**physics**

A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest?
*Saturday, December 11, 2010 at 8:01pm by erik*

**physics**

A 2 kg mass on a horizontal friction-free air track is accelerated by a string attached to a 115 kg mass hanging vertically from a pulley as shown. Compare the accelerations when the masses are interchanged, that is, for the case where the 115 kg mass dangles over the pulley, ...
*Friday, November 19, 2010 at 5:00pm by justin*

**physics**

A block of mass m = 2.67 kg is attached to a spring (k = 32.3 N/m) by a rope that hangs over a pulley of mass M = 5.34 kg and radius R = 6.41 cm, as shown in the figure. a) Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and ...
*Wednesday, March 30, 2011 at 6:18pm by toot*

**Physics 10th Grade**

Hi im kinda confused still on Pulley systems and hoping someone can help me out. The two masses (m1 = 5.5kg and m2 = 3.0kg) in the Atwood's machine shown in The Figureare released from rest, with at a height of 0.89m above the floor. When m1 hits the ground its speed is 1.8 m/...
*Thursday, November 5, 2009 at 6:41pm by Claire*

**physics**

The two masses on either side of the pulley, 2.2 kg and 3.6 kg, are each initially 1.8 m above the ground, and the massless frictionless pulley is 4.8m above the ground.What maximum height does the lighter object reach after the system is released? [Hint: First determine the ...
*Thursday, February 14, 2013 at 10:07pm by Anonymous*

**Physics**

A block of mass m = 3 kg is attached to a spring (k = 28 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 6 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*Tuesday, March 27, 2012 at 5:23pm by Angelina*

**Physics**

The kinetic energy of the system is the sum of the translational energies of the two masses, (1/2) m1 V^2 + (1/2) m2 V^2 PLUS the rotational energy of the pulley, which is (1/2) I w^2. The pulley angular speed is w = V/R and the moment of inertia of the pulley is I = (1/2) mp*...
*Monday, November 24, 2008 at 9:15pm by drwls*

**Physics-Mechanics**

A pulley is massless and frictionless. 3 kg, 2 kg, and 6 kg masses are suspended. What is the tension T1 in the string between the two blocks on the left-hand side of the pulley?
*Friday, September 24, 2010 at 1:15pm by Genevieve*

**trigonometry**

so..5pi/4 thank you very very much..i just have one LAST problem i need help with A pulley of radius 11cm rotates 5 times in 64 seconds. Find the angular velocity of the pulley. thnks again
*Saturday, January 17, 2009 at 1:59pm by y912f*

**Physic**

Solve for I in that equation, then from knowing the value of I, set it equal to 1/2 masspulley*radius^2 and solve for the masso of the pulley. radius pulley=.12m
*Monday, March 8, 2010 at 8:47pm by bobpursley*

**2 masses, pulley on a frictionless incline**

an object of mass m1= 311 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a second object of mass m2 = 355 g on the adjacent horizontal surface. Further, an external force of magnitude ІFext&#...
*Tuesday, October 6, 2009 at 11:27am by Natasha*

**physics**

B? well, the two ropes around the pulley both have 99 pulling on it, so the ceiling must be 2*99. At the pulley, force up= force down.
*Saturday, November 20, 2010 at 12:56pm by bobpursley*

**Physics**

You know the energy gained (mgh) You know the final KE of all masses, so the rest of the KE must be the pulley. KE=I*w I assume you will model the pulley as a disk of some radius r. w=vfinal/r Solve for masspulley.
*Monday, March 8, 2010 at 8:10pm by bobpursley*

**Physics**

Picture it like this:the rope is attached on top of the cage then from there it passes around a fixed pulley so the man in the cage is pulling the rope down from the pulley.PLEASE HELP ME Bobpursley
*Tuesday, March 12, 2013 at 5:19am by Pretender*

**Physics**

Picture it like this:the rope is attached on top of the cage then from there it passes around a fixed pulley so the man in the cage is pulling the rope down from the pulley.PLEASE HELP ME Bobpursley
*Tuesday, March 12, 2013 at 5:19am by Pretender*

**College Physics**

For the system of two crates and a pulley in Figure P9.14, (m1 = 28.5 kg, m2 = 10 kg, mpulley = 8 kg), what fraction of the total kinetic energy resides in the pulley?
*Monday, October 17, 2011 at 12:35pm by Sydney*

**Physics**

I don't understand how you got 26.96 N. The tension on the side being pulled (T1) is 27N. There is less tension on the other side of the pulley (T2). The difference in tension provides the torque to turn and accelerate the pulley. Call the angular acceleration 'alpha'. It ...
*Sunday, March 21, 2010 at 11:51pm by drwls*

**physics**

You exert a force of 455N in pulling 15.0m of rope using a pulley system to lift a 935N object 5.0m. What is the efficiency of the pulley system? Please help, I appreciate it a lot.
*Saturday, June 13, 2009 at 11:40pm by Cynthia*

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