[" Two men "P&Q" of mass "M" and "],[m(

A stationary body explodes into two fragments of masses m_(1) and m_(2) . If momentum of one fragment is p , the energy of explosion is

A stationary body explodes into two fragments of masses m_(1) and m_(2) . If momentum of one fragment is p , the energy of explosion is

Two bodies P and Q of masses m_(1) and m_(2) (m_(2) gt m_(1)) are moving with velocity v_(1) and v_(2) force exerted by P on Q during the collision is

A disc of mass M and radius R lies on a smooth horizontal table. Two men, each of mass (M)/(2) , are standing on the edges of two perpendicular radii at A and B Find the displacement of the centre of the disc if (a) The two men walk radically relative to the disc so as to meet at the centre C (b) The two men walk along the circumference to meet at the midpoint (P) of the are AB.

Two men of masses m and m//2 starts climbing up on two masseless strings fixed at the ceiling with acceleration g and g//2 respectively. The ratio of tensions in the two strings will be :

A heavy nucleus of mass M_(x) decay into two nuclei (Y and Z) of masses M_(y) and M_(z) . The Q value of the reaction is

A bomb at rest explodes into two parts of masses m_(1) and m_(2) . If the momentums of the two parts be P_(1) and P_(2) , then their kinetic energies will be in the ratio of:

Two spherical planets P and Q have the same uniform density rho, masses M_p and M_Q and surface areas A and 4A respectively. A spherical planet R also has uniform density rho and its mass is (M_P + M_Q). The escape velocities from the plantes P,Q and R are V_P V_Q and V_R respectively. Then