
A small ball of mass m is dropped from some height above ground to collide with a sphere of mass M as shown is figure. If the sphere was initially at rest on smooth surface end the ball rebounds tangentially as shown is figure, then the ratio of speed of ball just after collision to the speed of sphere is equal to (Assume all the surfaces are smooth)



Important Questions on Systems of Particles and Rotational Motion









A block of mass slides with velocity on a frictionless horizontal surface and collides with a uniform vertical rod and sticks to it as shown. The rod is pivoted about and swings as a result of the collision making angle before momentarily coming to rest. if the rod has mass and length the value of is approximately

A ball of mass moving with a velocity along -axis, hits another ball of mass which is at rest. After the collision, the first ball comes to rest and the second one disintegrates into two equal pieces. One of the pieces starts moving along -axis at a speed of . The second piece starts moving at a speed of at an angle (degree) with respect to the -axis. The configuration of pieces after the collision is shown in the figure. The value of (in degrees) to the nearest integer is _________.










