To one end 8 of a light inextensible string of length a is attached a small ring of mass 37 and to the other end b is attached a particle of mass 777. the ring is threaded on a smooth fixed horizontal rod. the system is released from rest when the string ab is taut and along the rod. using the principles of lincar momentum and energy, or otherwise, find the speeds of the ring and the particle when ab is ጊertical when ab is vertical the particle strikes and adheres to another particle of mass 2m which is stationary and free to move. show that when the system comes to instantaneous rest. ab makes an angle arccos (5/6) with the vertical.