A disc slows uniformly from to while rotating through an angular displacement of .

PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A disc slows uniformly from 30 rad s−130\,\text{rad s}^{-1} to 10 rad s−110\,\text{rad s}^{-1} while rotating through an angular displacement of 40 rad40\,\text{rad}. (a) Find the angular acceleration. (b) How long does this slowing down take?

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