|Oct18-07, 03:09 PM||#1|
spinning the wheels: intro to angular momentum
An object has rotational inertia I. The object, initially at rest, begins to rotate with a constant angular acceleration of magnitude alpha. What is the magnitude of the angular momentum L of the object after time t?
So I know that I have to find angular velocity and use the equation
L=angular momentum= I(omega) ... so how do i find this omega in terms of alpha and t??
I know that torque = r*F and L = r*momentum ... and F=m(alpha)(r) ??? ..
|Oct18-07, 03:14 PM||#2|
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If it were a linear velocity problem, could you find the speed given acceleration and time? Use similar thinking.
|Oct18-07, 03:19 PM||#3|
ah that's too easy .. thanks lots:)
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