Homework Help: physics

Posted by samiyah on Friday, December 2, 2011 at 11:16am.

A wheel of mass 0.47 kg and radius 49 cm is spinning with an angular velocity of 24 rad/s. You then push your hand against the edge of the wheel, exerting a force F on the wheel as shown in the figure below. If the wheel comes to a stop after traveling 1/4 of a turn, what is F?

physics - drwls, Friday, December 2, 2011 at 11:21am
Torque*Angle = (Kinetic energy lost)

F*R*(pi/2) = (1/2)*I*wo^2
= (1/4)*M*R^2*24^2

Solve for F.

wo = 24 rad/s
R = 0.49 m
M = 0.47 kg

Answer this Question

Related Questions

physics - After 10.0 s, a spinning roulette wheel at a casino has slowed down to...
physics - After 10.0 s, a spinning roulette wheel at a casino has slowed down to...
physics - A large grinding wheel in the shape of a solid cylinder of radius 0....
physics - A large grinding wheel in the shape of a solid cylinder of radius 0....
physics - A spoked wheel with a radius of 44.0 cm and a mass of 1.90 kg is ...
PHYSICS - A spinning wheel on a fireworks display is initially rotating in a ...
physics - A wheel of mass 0.52kg and radius 46cm is spinning with an angular ...
Physics - A child of mass 40 kg stands beside a circular platform of mass 100 kg...
physics help please - A torque of 1.15 N·m is applied to a bicycle wheel ...
Science - You are holding the axle of a bicycle wheel with radius 30 cm and mass...

For Further Reading

First Name:
School Subject:
Answer: