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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A smooth ball of mass m is suspended from a light string of length 1 m. Another ball of mass 2 m strikes the ball of mass in horizontally with a speed of u = root 35 m/s. The coefficient of restitution for the collision is e. The string becomes loose, when it makes an angle of 30∘ with the horizontal, find the value of e.

A smooth ball of mass m is suspended from a light string of length 1 m. Another ball of mass 2 m strikes the ball of mass in horizontally with a speed of u = root 35 m/s. The coefficient of restitution for the collision is e. The string becomes loose, when it makes an angle of 30∘ with the horizontal, find the value of e.

Two identical balls A and B lie on a smooth horizontal surface which then takes up the curved path. What is the minimum coefficient of restitution