Question

Two identical discs each of mass M(= 4m) and radius R are rotating in opposite sense with equal
angular speed o about vertical axes passing through their centres, (as shown in figure). A person of
mass m sitting on circumference of disc A jumps with a tangential relative velocity u (after jumping)
w.stone rotating disc (A) and lands on other disc (B) also tangential. Now the second disc (B) comes
to a stop. Find the relative velocity u.
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Answer 1

Answer:

This answer is sloved

Explanation:

By the formula of ch 7. rotational motion

here we use

i =1/2mr^2

and

k/r^2 =1/2