Homework Help: physics

Posted by Anonymous on Friday, October 28, 2011 at 12:12am.

A stationary bicycle is raised off the ground, and its front wheel (m = 1.3 kg) is rotating at an angular velocity of 14.0 rad/s (see the drawing). The front brake is then applied for 3.0 s, and the wheel slows down to 2.7 rad/s. Assume that all the mass of the wheel is concentrated in the rim, the radius of which is 0.33 m. The coefficient of kinetic friction between each brake pad and the rim is 骿 = 0.85. What is the magnitude of the normal force that each brake pad applies to the rim?

physics - drwls, Friday, October 28, 2011 at 12:17am
Torque = (moment of inertia)*(angular deceleration rate)

Solve for torque and relate that to the brake pads force.

Torque = 2*(normal force)*0.85*R

Answer this Question

Related Questions

physics - The moment of inertia of a 0.98 kg bicycle wheel rotating about its ...
physics - If you lift the front wheel of a poorly maintained bicycle off the ...
physics - Suppose you are riding a stationary exercise bicycle, and the ...
physics - Suppose you are riding a stationary exercise bicycle, and the ...
math - This is an SAT prep question. Senai customized her bicycle by exchanging...
Physics Help! - Sorry I've tried 3 different ways to answer this and all ...
Geometry - The wheel of an adult's bicycle has diameter 26 in. The wheel of ...
Physics - A penny farthing is a bicylce that was popular between 1870 and 1890. ...
trigo - the front wheel of a bicycle has a diameter of 16 in and the back wheel ...
Physics help - A light rope is wrapped several times around a large wheel with a...

For Further Reading

First Name:
School Subject:
Answer: