Rotational Motion - I have the answer but I don't know how to get there

  • Thread starter jbcaviness
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  • #1
A torque of 1 N.m is applied to a bike wheel of radius 35 cm and mass 0.75 kg. Treating the wheel as a hoop (I=MR^2)

A. What is it's angular acceleration? Answer - 10.9 rad/s^2
B. If the wheel starts from rest, what is its angular speed after 5 seconds? Answer - 54.4 rad/s
C. How many turns does it do in those 5 seconds? Answer 21.7 turns

I'm trying to study for my exam, and I'm stuck on this problem for our practice test. My professor gave us answers, but I'm just at a loss as to how to get the answers. Can anyone explain how to solve this problem? Thanks!
 

Answers and Replies

  • #2
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What is the relationship between torque, moment of inertia and angular acceleration?
 

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