A playground turntable’s angular momentum increases uniformly from 12 kg·m²/s at t =…

PHYSICS · Subjective · A Level · Physics · Engineering physics · Engineering physics

Problem

A playground turntable’s angular momentum increases uniformly from 12 kg·m²/s at t = 1.0 s to 28 kg·m²/s at t = 5.0 s. Determine the average net external torque on the turntable during this 4.0 s interval. Include the sign of your answer.

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