Saturday

April 19, 2014

April 19, 2014

Number of results: 86,015

**physics**

If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, friction in the bearings causes the wheel to stop in just 12s. Part A If the moment of inertia of the wheel about its axle is 0.30kg\m2 , what is the magnitude of...
*Tuesday, March 13, 2012 at 11:50am by Anonymous*

**physics**

Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 11.0 cm and b = 23.0 cm. (Indicate the direction with the sign of your answer. Assume that the positive direction is counterclockwise.)
*Monday, April 30, 2012 at 12:10am by Anonymous*

**Physics please check**

A uniform solid disk with a mass of 32.3 kg and a radius of 0.414 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk. (a) What is the net torque produced by the two forces? (Assume counterclockwise is the positive direction.) (b) ...
*Tuesday, April 24, 2007 at 8:24pm by Mary*

**Physics**

A stiff uniform wire of mass M_0 and length L_0 is cut, bent, and the parts soldered together so that it forms a circular wheel having four identical spokes coming out from the center. None of the wire is wasted, and you can neglect the mass of the solder. What is the moment ...
*Thursday, April 5, 2012 at 10:39am by Joe*

**college**

1. Consider the torque (moment) applied to the wheel, as measured about the point where the wheel touches the curb. To make the wheel rise above the curb, the torque due to the force must exceed the torque due to the weight, which equals m g sqrt(R^2-h^2) and is in the ...
*Monday, May 18, 2009 at 11:26pm by drwls*

**Physics**

A wheel with rotational inertia I is mounted on a fixed, fricitonless axle. The angular speed w of the wheel is inccreased from zero to w_f in a time interval T. 1: What is the average net torque on the wheel during the time interval, T? a) w_f/T b)w_f/T^2 c) Iw_f^2/T d)Iw_f/T...
*Sunday, March 25, 2007 at 4:49pm by Tammy*

**Physics**

Can you please help with this problem. I don't know how to solve it at all. A uniform solid disk with a mass of 32.3 kg and a radius of 0.464 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk. (a) What is the net torque produced ...
*Tuesday, May 8, 2007 at 10:33pm by Jim*

**Physics**

Say the angular velocity of the wheel is w and the linear velocity of the car is v Say the angular acceleration of the wheel is alpha and the linear acceleration of the car is a Say radius of wheel is r Then for the no slip car: forward velocity of axle v = w r forward ...
*Saturday, April 5, 2008 at 3:35am by Damon*

**Maths**

A ferris wheel has an axle standing 38m off the ground and a radius of 35m. The wheel takes 5 minutes to complete one revolution. The wheel moves in clockwise motion and you are sitting in one of the carriages which is horizontally in line with the axle, moving upwards. Form ...
*Tuesday, May 1, 2012 at 7:33am by Raina*

**physics**

The 17.9 cm diameter disk rotates on an axle through its center. F1=22.1 N, F2=32.4 N, F3=32.4 N, F4=22.1 N, and d=4.74 cm. What is the net torque about the axle?
*Sunday, October 12, 2008 at 11:20am by Sara*

**physics**

The 17.9 cm diameter disk rotates on an axle through its center. F1=22.1 N, F2=32.4 N, F3=32.4 N, F4=22.1 N, and d=4.74 cm. What is the net torque about the axle?
*Wednesday, October 15, 2008 at 9:45pm by Adam*

**physics**

A merry-go-round in the park has a radius of 1.8 m and a rotational inertia of 900kgm^2. A child pushes the merry-go-round with a constant force of 80 N applied at the edges and parallel to the edge. A frictional torque of 12 Nm acts at the axle of the merry-go-round. a. what ...
*Sunday, October 17, 2010 at 8:21pm by Alyssa*

**Physics**

The part about moving the axle is rather confusing. I assume they mean doing the experiment over again with the axis at the end of the bar. The angular speed at the end of the 10 s will be less than for the first case (also after 10 seconds) for two reasons: (1) Only one jet ...
*Monday, November 30, 2009 at 2:17pm by drwls*

**Physics**

A 2000kg ferris wheel accelerates from rest to an angular speed of 2.0 rad/s in 12 secs. Approximate the ferris wheel as a circular disk with a radius of 30m. what iss the net torque on the wheel
*Sunday, January 31, 2010 at 10:58am by C. Standard *

**college**

A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant angular speed making 45.0 full revolutions in a time interval of 7.00 sec . What is the rotational kinetic energy of the rotating wheel?
*Sunday, October 25, 2009 at 10:33pm by Anonymous*

**physics**

A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant angular speed making 45.0 full revolutions in a time interval of 7.00 sec . What is the rotational kinetic energy of the rotating wheel?
*Monday, October 26, 2009 at 2:55am by Anonymous*

**physics**

A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant angular speed making 45.0 full revolutions in a time interval of 7.00 sec . What is the rotational kinetic energy of the rotating wheel?
*Monday, October 26, 2009 at 3:09am by Anonymous*

**Physics**

A wheel and axle arrangement has an axle with a diameter of 25cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes. 1)If the mechanical advantage of the system is 30, determine the diameter of the wheel. ANSWER = m 2)Determine the effort required to ...
*Monday, May 20, 2013 at 12:16pm by Danny*

**Physics**

Am I correct? Which statement explains why a bicycle is stable when a rider pedals quickly? (Points : 1) The angular momentum vector resists directional change. <------- Applying a torque does not change the angular velocity of the wheel. A rotating object acts like a ...
*Monday, February 3, 2014 at 2:57pm by Me and I*

**Physics**

Forces F1=7.50N and F2=5.30N are applied tangentially to a wheel with radius 0.330 m. What is the net torque on the wheel due to these two forces for an axis perpendicular to the wheel and passing through its center? It depends upon whether or not the forces F1 and F2 are both...
*Tuesday, March 27, 2007 at 1:52pm by Karla*

**Physics**

A and B are really asking the same question, and the results are the same, since 1 N = 1 kg m/s^2. Assume that the water enters and leaves the waterwheel tangent to the wheel. The loss of angular momentum of the water, measured about the axis of the wheel, equals the TORQUE ...
*Sunday, April 13, 2008 at 12:35am by drwls*

**physics**

a wheel radius 0.25 m is mounted on a frictionless horizontal axle. the moment of inertia of the wheel about the axis is 0.040. a light cord wrapped around the wheel supports the 0.50 kg of box. the wheel is released from the rest. what is the magnitude of acceleration of the ...
*Sunday, April 28, 2013 at 10:22pm by sam*

**physics**

A typical ten-pound car wheel has a moment of inertia of about . The wheel rotates about the axle at a constant angular speed making 30.0 full revolutions in a time interval of 5.00 .
*Sunday, December 6, 2009 at 5:01pm by christina*

**Physic**

A wheel-and-axle system shown consists of two coaxial wheels of radius r = 2 meters and R = 6 meters. The forces applied to the system as shown in the diagram are: F1 = 80 N F2 = 80 N F3 = 40 N F4 = 30 N If counterclockwise is positive, what is the net torque on this system?
*Sunday, November 25, 2012 at 9:09pm by Anonymous*

**Physic**

A wheel-and-axle system shown consists of two coaxial wheels of radius r = 2 meters and R = 6 meters. The forces applied to the system as shown in the diagram are: F1 = 80 N F2 = 80 N F3 = 40 N F4 = 30 N If counterclockwise is positive, what is the net torque on this system?
*Sunday, November 25, 2012 at 9:09pm by Anonymous*

**science**

A wheel with a radius of 20 cm is attached to an axle with a radius of 1cm. An effort force of 100 N on the wheel counters a resistance force of what on the axle?
*Friday, February 17, 2012 at 12:19pm by Micheal*

**Physics**

A wheel with a radius of 20 cm is attached to an axle with a radius of 1cm. An effort force of 100 N on the wheel counters a resistance force of what on the axle?
*Friday, February 17, 2012 at 5:49pm by Micheal*

**physics class-Help!!!**

torque is radius X Force sin theta Torque 1 and 2 have angles of 90 degrees making it equal to 1. Torque 1:0.6 (radius of 1.2) X 6.0 N Torque 2:1.5 (radius of 3)X 5.2 N Torque 3:1.5 (radius of 3)X 5.2 N sine 30 degrees Torque 1 + Torque 2 + Torque 3 = Net Torque 3.6 + 7.8 + 3....
*Wednesday, July 16, 2008 at 11:40pm by Steph*

**Math**

A river does 6,500 J of work on a water wheel every second. The wheel's efficiency is 12%. a. How much work in joules can the axle of the wheel do? b. What is the power output of the wheel in 1 s?
*Saturday, November 3, 2012 at 9:02pm by Leah*

**College physics**

Consider the two situations. In the first a machine must pull a box up a rough slope at constant speed. The mass of the box is 800 kg, the coefficient of kinetic friction is 0.2, and the slope is inclined at 15 degrees to the horizontal. In the second situation the machine ...
*Tuesday, March 27, 2012 at 1:09pm by Cody*

**12th grade**

A bicycle wheel has a radius of 0.330 m and a rim whose mass is 1.20 kg. The wheel has 50 spokes, each with a mass of 0.010 kg. a.) Calculate the moment of inertia of the rim about the axle. b.) Determine the moment of inertia of any one spoke, assuming it to be a long, thin ...
*Wednesday, March 10, 2010 at 12:22am by Janelle*

**Physics**

A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 18.00 rad/s. The temperature of the wheel changes from -100.0 to +300.0 degrees Celcius. No net external torque acts on the wheel, and the mass of the spokes is negligible. (a) Does the...
*Tuesday, February 15, 2011 at 4:59pm by Heather*

**physics**

A 715 gram grinding wheel 29.5 {\rm cm} in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the center.) When it is in use, it turns at a constant 210 {\rm rpm} about an axle perpendicular to its face through its center. When the power switch ...
*Wednesday, April 4, 2012 at 10:26am by Anonymous*

**Physics/Chemistry**

A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 18.00 rad/s. The temperature of the wheel changes from -100.0 to +300.0 degrees Celcius. No net external torque acts on the wheel, and the mass of the spokes is negligible. (a) Does ...
*Tuesday, February 15, 2011 at 6:40pm by Heather*

**Physics**

A merry-go-round in the park has a radius of 1.8 m and a rotational inertia of 900 kgm^2. A child pushes the merry-go-round with a constant force of 80 N applied at the edge and parallel to the edge. A frictional torque of 12 Nm acts at the axle of the merry-go-round. a. What ...
*Wednesday, January 20, 2010 at 8:13pm by Bell*

**physics**

It is usually specified as one of the independent variables of the problem. If it applies to a wheel, it is the linear acceleration of the axle or the vehicle with the wheel, divided by the wheel radius.
*Sunday, September 30, 2007 at 11:09pm by drwls*

**Physics (torque)**

The steering wheel of a certain vehicle has a diameter of 38.9 cm, and it turns a shaft that is 8.3 cm in diameter. If a 85.9 N force is needed to turn the steering wheel, what torque is exerted on the wheel?
*Friday, November 16, 2012 at 4:46pm by Anonymous*

**mechanics**

Find the total kinetic energy of a 1500 g wheel, 700 mm in diameter, rolling across a level surface at 650 rpm. Assume that the wheel can be considered as a hoop. (b) For the wheel in part (a), calculate the torque required to decrease its rotational speed from 400 rpm to rest...
*Tuesday, May 14, 2013 at 1:15pm by george*

**physics**

A large wooden wheel of radius R and the moment of inertia I is mounted on an axle so as to rotate freely. A bullet of mass m and speed v is shot tangential to the wheel and strike its edge, lodging in the wheel’s rim. If the wheel was originally at rest, what is its rotation ...
*Saturday, December 4, 2010 at 9:10am by Gee*

**Physics**

Simple Machines A simple wheel and axle has a wheel diameter of 2.3m and an axle diameter of 92mm. If an effort of 26N is required to raise a mass of 16 kg what is the efficiency of the machine? A- 2.46% B- 95.3% C- 24.1% D- 20.1% E- 65.5% I am having a problem determining ...
*Saturday, May 11, 2013 at 3:10pm by Danny*

**Physics**

Ignore the moment of inertia of the wheel. F=ma solve for F Now that F must come from the wheel-ground connection, and Torque/radius=forceatground Torque=ma/r
*Tuesday, January 8, 2008 at 9:11pm by bobpursley*

**Physics**

The 16 kg mass has a weight of M*g = 156.8 N. Presumably, the cable that lifts the weight is wound around the axle and the cable that one pulls on is wrapped around the wheel outer rim. Input torque = 26 N*(2.3/2) m = 29.9 N-m Output torque = 156.8 N * (0.092/2 m) = 7.213 N-m ...
*Saturday, May 11, 2013 at 3:10pm by drwls*

**physics**

to keep from nosing up, the torque about the rear axle from the front wheels has to be greater than the torque the rear wheels exert on the ground.
*Tuesday, December 3, 2013 at 6:55am by bobpursley*

**Science**

You are holding the axle of a bicycle wheel with radius 30 cm and mass 1.07 kg. You get the wheel spinning at a rate of 79 rpm and then stop it by pressing the tire against the pavement. You notice that it takes 1.11 s for the wheel to come to a complete stop. What is the ...
*Monday, November 26, 2012 at 8:23pm by Gerrard*

**Physic (concepts-please check my thoughts)**

A net torque applied to a rigid object always tends to produce? a)translational acceleration b) rotational equilibrium c) rotational acceleration d) rotational inertia e) none of these work (c) Torque produces torsion and tends to produce rotation. The net torque acting on a ...
*Sunday, December 10, 2006 at 6:16pm by Diane*

**science**

That means that the weight does positive work on the crane. We could use that if we were smart to run a generator connected to the crane cable to charge the battery on the crane. Regenerative braking systems on electric and hybrid vehicles work this way. Instead of forcing a ...
*Friday, February 19, 2010 at 4:55pm by Damon*

**Science**

A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional force?
*Tuesday, February 5, 2013 at 12:36am by Physics*

**physics**

The wheel of a car has a radius of 0.390 m. The engine of the car applies a torque of 466 N·m to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road must be applying a force of static friction to the wheel that produces a ...
*Friday, December 9, 2011 at 9:00am by nagham*

**Physics**

The wheel of a car has a radius of 0.390 m. The engine of the car applies a torque of 282 N · m to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road must be applying a force of static friction to the wheel that produces a ...
*Thursday, November 15, 2012 at 12:34am by Elizabeth*

**Physics - Rotational Mechanics**

The combination of an applied force and a constant frictional force produces a constant total torque of 35.8 Nm on a wheel rotating about a fixed axis. The applied force acts for 5.95 s. During this time the angular speed of the wheel increases from 0 to 9.9 rad/s. The applied...
*Sunday, March 4, 2007 at 11:09pm by John*

**Please check solution**

A uniform solid disk with a mass of 40.3 kg and a radius of 0.454 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk (a) What is the net torque produced by the two forces? (Assume counterclockwise is the positive direction (b) ...
*Monday, May 7, 2007 at 1:18pm by Papito*

**science**

I am also learning about simple machine a doorknob is a wheel-and-axle I do not know about the scissors
*Monday, October 1, 2007 at 7:09pm by Dani*

**Physics**

A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional force?
*Tuesday, February 5, 2013 at 12:36am by Physics*

**physics**

A uniform disk with a mass of 27.3 kg and a radius of 0.309 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as the drawing indicates. (a) What is the net torque produced by the two forces? (b) What is the angular acceleration ...
*Wednesday, November 2, 2011 at 12:16am by Sami*

**physics help please**

A torque of 1.15 N·m is applied to a bicycle wheel of radius 36 cm and mass 0.83 kg. Treating the wheel as a hoop, find its angular acceleration. ?rad/s2 I know accel is alpha times the radius...where does torque tie in?
*Wednesday, October 22, 2008 at 12:59am by kelsey*

**Physics - THIS IS DUE TMRW PLEASE HELP!**

The car will topple over if the centripetal force, applied at the center of mass, reaches a value such that the net torque about the wheels on the OUTSIDE of the curve is zero. Under these conditions, the centripetal-force torque about a line through the outer wheel's contact ...
*Sunday, May 10, 2009 at 1:15am by drwls*

**Physics**

Is actualy A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4(pi) rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seconds. What is the average torque on the wheel by the frictional ...
*Tuesday, February 5, 2013 at 12:36am by dcjones*

**Physics**

an automobile tire has a radius of 0.350M, and its center forward with a liner speed of v=13.0m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) (b) Relative to the axle, what is the ...
*Wednesday, March 14, 2007 at 4:00am by CJ*

**physics**

The motor of a fan turns a small wheel of radius rm = 1.60 cm.This wheel turns a belt, which is attached to a wheel of radius rf = 2.90 cmthat is mounted to the axle of the fan blades. Measured from the center of this axle, the tip of the fan blades are at a distance rb = 11.0...
*Friday, October 21, 2011 at 12:08am by mymi*

**physics**

for an object in equillibrium the net torque acting on it vanishes only if each torque is calculated about?
*Friday, May 25, 2012 at 1:38am by owen*

**Physics**

There is a bicycle wheel resting against a small step whose height is h = 0.132 m. The weight and radius of the wheel are W = 27.3 N and r = 0.324 m, respectively. A horizontal force is applied to the axle of the wheel. As the magnitude of increases, there comes a time when ...
*Friday, November 16, 2012 at 3:31pm by 4319*

**physics-frictional torque**

A string that passes over a pulley has a 0.321 kg mass attached to one end and a 0.655 kg mass attached to the other end. The pulley, which is a disk of radius 9.50 cm, has friction in its axle. What is the magnitude of the frictional torque that must be exerted by the axle if...
*Saturday, November 27, 2010 at 4:28pm by Cerra*

**Physics- Simple machines**

A wheel and axle arrangement has an axle with a diameter of 25cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes. 1) If the mechanical advantage of the system is 30, determine the diameter of the wheel___________m. 2)Determine the effort required to ...
*Sunday, May 12, 2013 at 7:04pm by Danny*

**science**

a river does 6500J of work on a water wheel every second.The wheels efficiency is 12 percent.A)How much work in joules can the axle of the wheel do in a second? B)What is the power output of the wheel?
*Sunday, March 3, 2013 at 6:02pm by kayla*

**physics**

The figure shows a bicycle wheel resting against a small step whose height is h = 0.110 m. The weight and radius of the wheel are W = 26.0 N and r = 0.370 m. A horizontal force is applied to the axle of the wheel. As the magnitude of increases, there comes a time when the ...
*Saturday, March 26, 2011 at 1:26pm by Alicia*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (b) What is the mass of the ...
*Wednesday, November 9, 2011 at 9:02pm by jim*

**physics**

When a 19.9 kg wheel with an angular speed of 3.10 rad/s is disconnected from a motor, a 0.124 N · m frictional torque slows the wheel to a stop. If the wheel has radius of 0.71 m, how long will it take for the wheel to come to rest after being disconnected from the motor?
*Friday, November 18, 2011 at 3:24pm by Alex*

**Physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 300 N applied to its edge causes the wheel to have an angular acceleration of 1.072 rad/s2. (a) What is the moment of ...
*Wednesday, December 5, 2012 at 9:06pm by anonymous*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (a) What is the moment of ...
*Wednesday, November 9, 2011 at 3:56pm by Anonymous*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.370m is free to rotate on a frictionless, vertical axle. A constant tangential force of 470 N applied to its edge causes the wheel to have an angular acceleration of 0.800 rad/s2. (a) What is the moment of ...
*Sunday, November 11, 2012 at 5:33pm by Anonymous*

**physics**

A 5.0 kg \rm kg, 52-cm \rm cm-diameter cylinder rotates on an axle passing through one edge. The axle is parallel to the floor. The cylinder is held with the center of mass at the same height as the axle, then released. a)What is the magnitude of the cylinder's initial angular...
*Friday, December 6, 2013 at 2:03pm by Chloe *

**Physics- Elena please help!**

A large grinding wheel in the shape of a solid cylinder of radius 0.450m is free to rotate on a frictionless, vertical axle. A constant tangential force of 180 N applied to its edge causes the wheel to have an angular acceleration of 0.870 rad/s2. (a) What is the moment of ...
*Tuesday, November 6, 2012 at 3:01pm by Anonymous*

**physics**

A wheel of diameter 28.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. A force = (-38.0 + 39.0 ) N acts at a point on the edge of the wheel that lies exactly on the x axis at a particular instant. What is the torque about the ...
*Monday, January 2, 2012 at 10:57pm by Joe*

**Physics 141**

A bicycle wheel resting against a small step whose height is h = 0.125 m. The weight and radius of the wheel are W = 23.1 N and r = 0.330 m, respectively. A horizontal force vector F is applied to the axle of the wheel. As the magnitude of vector F increases, there comes a ...
*Saturday, April 5, 2014 at 4:54pm by dakota22*

**physic**

A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75.3 N · m. Find the magnitude of the friction force.
*Sunday, July 29, 2012 at 5:21pm by Anonymous*

**physics**

A grinding wheel of radius 0.370 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 79.2 N • m. Find the magnitude of the friction force.
*Sunday, December 9, 2012 at 10:36pm by Anonymous*

**Physics**

The combination of an applied force and a frictional force produces a constant total torque of 38.1 Nm on a wheel rotating about a fixed axis. The applied force acts for 7.00 s, during which time, the angular speed of the wheel increases from 2.40 rad/s to 12.5 rad/s. The ...
*Monday, April 26, 2010 at 11:36pm by Tessa*

**Science**

I think this refers to the tipping action about the axle and the ability to move on the wheel.
*Friday, November 28, 2008 at 5:27am by Dr Russ*

**riddled with tpos :(**

The total force on the four tires is the weight of the car: m g = 1160 * 9.8 Now do a see saw You have m g down at 1.02 meters behind the front axle You have 2Fb up at the rear tires,2.54 meters behind the front axle (I called it two Fb so I will not forget to divide by two ...
*Saturday, January 5, 2008 at 7:27pm by Damon*

**Physics 141**

The drawing shows a bicycle wheel resting against a small step whose height is h = 0.125 m. The weight and radius of the wheel are W = 23.1 N and r = 0.330 m, respectively. A horizontal force vector F is applied to the axle of the wheel. As the magnitude of vector F increases...
*Thursday, April 3, 2014 at 7:36pm by dakota22*

**Physics 141**

The drawing shows a bicycle wheel resting against a small step whose height is h = 0.125 m. The weight and radius of the wheel are W = 23.1 N and r = 0.330 m, respectively. A horizontal force vector F is applied to the axle of the wheel. As the magnitude of vector F increases...
*Saturday, April 5, 2014 at 4:30pm by dakota22*

**Physics**

A cord is wrapped around the rim of a wheel .250 m in radius, and a steady pull of 40.0 N is exerted on the cord. The wheel is mounted on frictionless bearings on a horizontal shaft through its center. The moment of inertia of the wheel about this shaft is 5.00kg*m^2. Compute ...
*Tuesday, March 27, 2007 at 12:00pm by Karla*

**physics**

The drawing is needed to show where and in what directions the forces are applied to the disk. Compute net torque. angular acceleration = (Net Torque)/(Moment of inertia)
*Wednesday, November 2, 2011 at 12:16am by drwls*

**Physics**

The spinning wheel has angular momentum, lined up with its axis of spin. If you try to turn that axis, that requires torque, because you are changing the angular momentum vector. (the direction, not the magnitude). However the frame (gimbals) allow the vehicle to rotate around...
*Friday, January 27, 2012 at 6:46pm by Damon*

**physics**

A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius 27.0 cm) without ...
*Tuesday, October 19, 2010 at 10:25am by Lacey*

**math (vectors) & physics**

In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (-2.0, 4.0 m, -1.0 m) when forces F1 = (-4.0 N) k and F2 = (-5.0 N) j act on the flea? _____________________________________ Torque is the cross product of the radius vector and ...
*Wednesday, March 28, 2007 at 7:32pm by sam*

**physics!**

The total force on the four tires is the weight of the car: m g = 1160 * 9.8 Now do a see saw You have m g down at 1.02 meters behind the front axle You have 2Fb up at the rear tires,2.54 meters behind the front axle (I called it two Fb so I will not forget to divide by two to...
*Saturday, January 5, 2008 at 7:27pm by Damon*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 260 N applied to its edge causes the wheel to have an angular acceleration of 0.795 rad/s2. (a) What is the moment of ...
*Thursday, November 15, 2012 at 5:25pm by Shane*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 250 N applied to its edge causes the wheel to have an angular acceleration of 1.053 rad/s2. (a) What is the moment of ...
*Friday, November 30, 2012 at 3:19pm by heather*

**physics**

An automobile tire has a radius of 0.335 m, and its center moves forward with a linear speed of v = 24.1 m/s. (a) Determine the angular speed of the wheel. (b) Relative to the axle, what is the tangential speed of a point located 0.243 m from the axle?
*Tuesday, July 16, 2013 at 3:01pm by katie*

**physics**

Are the two strings attached to the same point on the ceiling? If so, consider the net torque on either ball about the ceiling attach point. it must be zero. The gravity (weight) torque balances the Coulomb-force torque. M*g*Lsin22 = k q^2*Lcos22/(2Lsin22)^2 L can be solved ...
*Friday, October 14, 2011 at 6:59am by drwls*

**physics!**

Ok, so after struggling through the above explanation I decided to repost a (imho) better worded, generalized explanation: Firstly let me define my variables: Fb=force of BOTH back wheels on the ground=2F(1backwheel) Ff=force of BOTH front wheels on the ground=2F(1frontwheel) ...
*Saturday, January 5, 2008 at 7:27pm by Arno*

**physics 2...help please**

A wheel on a game show is given an initial angular speed of 1.33 rad/s. It comes to rest after rotating through 3/4 of a turn. (a) Find the average torque exerted on the wheel given that it is a disk of radius 0.76 m and mass 6.4 kg. ? N·m sorry, I'm having converting issues...
*Wednesday, October 22, 2008 at 1:03am by kelsey*

**physics class-Help!!!**

No, it isn't, but thanks for showing your work. Actually there are only two torques applied. I don't see why you are applying a factor of 1/2 to each radius Torque 1 is +1.2 x 6.0 = +7.2 N-m Torque 2 is -3.0 x 5.2 sin 30 = -7.8 N-m The net torque is -0.6 N-m
*Wednesday, July 16, 2008 at 11:40pm by drwls*

**physics**

A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius 27.0 cm) without ...
*Monday, October 18, 2010 at 8:03pm by rob*

**phyics**

The steering wheel of a car has a radius of 0.19 m, and the steering wheel of a truck has a radius of 0.26 m. The same force is applied in the same direction to each steering wheel. What is the ratio of the torque produced by this force in the truck to the torque produced in ...
*Friday, November 1, 2013 at 1:12pm by bobby*

**physics**

A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equal to 83.N is applied to the rim of the wheel. The wheel has radius 0.110m . Starting from rest, the wheel has an angular speed of 14.6rev/s after 3....
*Friday, May 3, 2013 at 8:47pm by amy*

**physics**

If a 31.0 N·m torque on a wheel causes angular acceleration 22.0 rad/s2, what is the wheel's rotational inertia?
*Wednesday, April 7, 2010 at 9:10pm by Jordan*

**Physics**

a 14.0 N·m torque on a wheel causes angular acceleration 11.3 rad/s2, what is the wheel's rotational inertia?
*Tuesday, November 6, 2012 at 3:08pm by Torin*

**physics class-Help!!!**

A 3.0 m rod is pivoted about its left end.A force of 6.0 N is applied perpendicular to the rod at a distance of 1.2 m from the pivot causing a ccw torque, and a force of 5.2 is applied at the end of the rod 3.0 m from the pivot. The 5.2 N is at an angle of 30 degrees to the ...
*Wednesday, July 16, 2008 at 11:40pm by Steph*

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