Question

During the launch from a board, a divers angulad speed about her center of mass changes from zero to 5.4 rad/s in 450 ms. Her rotational inertia about her center of mass is 12 kg times m^2. During launch, what was the magnitude of her average angular accerlertation?

During the launch, what was the magnitude of the average external torque on her from the board?

Answer 1

You have to use the basic definitions here:

angular acceleration= changeangularvelocity/time


torque=Inertia*angularacceleation.

Answer 2

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