A potter’s wheel is initially rotating at

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

A potter’s wheel is initially rotating at 20 rad s−120\,\text{rad}\,\text{s}^{-1}. It experiences a constant angular acceleration of 4 rad s−24\,\text{rad}\,\text{s}^{-2} for 3 s3\,\text{s}, after which a braking torque produces a constant angular deceleration that brings it to rest in the next 5 s5\,\text{s}. (i) Find the angular velocity just after the first 3 s3\,\text{s}. (ii) Calculate the angular displacement during the braking period. (iii) Determine the total angle turned by the wheel from the beginning until it comes to rest.

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