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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A ball is projected from a point in a horizontal plane so as to strike a vertical wall at right angle and after rebounding from the wall and once from the horizontal plane it returns to the point of projection. Find coefficient of restitution (e) for the two collisions, assuming it to be same for both collision. Find the value of 1/e.

A ball is projected from a point in a horizontal plane so as to strike a vertical wall at right angle and after rebounding from the wall and once from the horizontal plane it returns to the point of projection. Find coefficient of restitution (e) for the two collisions, assuming it to be same for both collision. Find the value of 1/e.

(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. 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