A runner of mass 61.0 kg runs around the edge of a horizontal turntable mounted on...

A runner of mass 61.0 kg runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to the earth has magnitude 2.90 m/s . The turntable is rotating in the opposite direction with an angular velocity of magnitude 0.170 rad/s relative to the earth. The radius of the turntable is 2.60 m , and its moment of inertia about the axis of rotation is 83.0 kg⋅m^2 .

Find the final angular velocity of the system if the runner comes to rest relative to the turntable. (You can treat the runner as a particle.)

Solutions

Expert Solution

The answer is 0.9 anticlockwise

If you think why we have conserved the angular momentum then the answer is netthe torque is zero

Feel free to ask any doubt. If u like the answer please give a thumbs up

genius_generous answered 1 year ago

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