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A hollow smooth uniform sphere A of mass m rolls without sliding on a smooth horizontal surface. It collides elastically with another stationary smooth solid sphere B of same mass m and same radius. Find the ratio of kinetic energy of B to that of A just after the collision.
when two identical bodies collide & one body is at rest initially then
linear momentam is totally transfered to other body...
let the velocity of sphere A initially was V....
final velocity of A= 0
final velocity of other sphere B is V .... (linear momentam is transfered)
kinetic energy of B =mV2/2 ..............1
kinetic energy of A = IW2/2
=mV2/3 ................2 (Isphere = 2/3 mr2 )
eq1 / eq2 =3/2
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