A disk of radius rotates about a fixed axis

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A disk of radius

0.20\,\text{m}

rotates about a fixed axis. Its angular velocity increases uniformly from

0

8.0\,\text{rad}\,\text{s}^{-1}

during the first

2.0\,\text{s}

and then remains constant thereafter. Find the magnitude of the total linear acceleration (tangential plus centripetal) of a point on the rim at

t = 1.5\,\text{s}