A sphere of mass m and radius r is released from a wedge of mass 2m as shown. ABC is hemispherical position of radius R. The impulse imparted to the system consisting wedge and sphere by the vertical wall w1w2 till the time sphere reaches at the bottom most position of spherical portion for the first time is: (Friction between wedge and horizontal surface is absent and between sphere and wedge friction is sufficient to avoid slipping between them.)