Answer :

Given data-

Radius of the disc, r = 20 cm or 0.20 m

Angular speed of the disc ω = 10 rad/s

We know the relation between angular speed and linear speed

given by-

Now we if block is going down at instant the velocity of the block is

given by

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Figure <span langPhysics - Exemplar

Figure <span langPhysics - Exemplar

Two uniform solidHC Verma - Concepts of Physics Part 1

A block of known HC Verma - Concepts of Physics Part 1