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jay gohel Grade:
        

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.

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

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

6 years ago
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