A block hangs from a string wrapped on a disc of radius 20 cm free to rotate about its axis which is fixed in a horizontal position. If the angular speed of the disc is 10 rad/s at some instant, with what speed is the block going down at that instant?
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