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tachu101
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Homework Statement
A body with moment of inertia 20kgm^2 is rotating about a fixed axis with an angular velocity of w(t)= 3t^2-4
a. Through what angular displacement will the body move in the first 3 seconds
b. What is the new torque exerted on the object at t=2
Homework Equations
Angular Kinematics equations
The Attempt at a Solution
I integrated the angular velocity to get the displacement to be Theta(t)=t^3-4t ... then I evaluated the definite integral from 0 to 3 to get 15. But 15 What? Am I doing this right?
I don't know what to do for the second part. Does anyone know?