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Vertical strings of same length L suppor...

Vertical strings of same length `L` support two balls A and B of mass `2m` each. There is a small monkey of mass `m` sitting on ball A. Suddenly, the monkey jumps off the ball A at an angle `theta = 45^(@)` to the horizontal and lands exactly on the ball B. Thereafter, the monkey and the ball B just manage to complete the vertical circle.
(a) Find distance d between the two string and the speed with which the monkey jumped of the ball A.
(b) Find the impulse of the string tension on ball A during the small period when the monkey interacted with the ball to jump off it.

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