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An elastic ball of mass 'm' is suspended...

An elastic ball of mass `'m'` is suspended from a fixed point by an inextensible string. A small particle of same mass `m`, moving downwards at an angle of `37^(@)` with the vertical lits the ball directly with the velocity `v_(0)`. If the coefficient of restitution is `4//5`,
(`i`) find the velocity of the ball just after the impact.
(`ii`) determine the impulsive tension(i.e impulse) in the string at the instant of collision.

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