JEE PYQ: Rotational Motion Question 2
Question 2 - 2021 (16 Mar Shift 1)
Consider a 20 kg uniform circular disk of radius 0.2 m. It is pin supported at its center and is at rest initially. The disk is acted upon by a constant force $F = 20$ N through a massless string wrapped around its periphery as shown in the figure.
Suppose the disk makes $n$ number of revolutions to attain an angular speed of 50 rads$^{-1}$. The value of $n$, to the nearest integer, is ____. [Given: In one complete revolution, the disk rotates by 6.28 rad]
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