SaraNextGen.Com

A sphere ball of mass  moving with initial velocity  collides elastically with another ball of mass  which is fixed at one end of  shaped rigid massless frame as shown in Fig (a). The  shaped frame contains another mass  connected at the other end

The speed of the striking mass after collision is

a)

 backwards

b)

0

c)

 in same direction

d)

 backwards



Question ID - 101406 | SaraNextGen Top Answer

A sphere ball of mass  moving with initial velocity  collides elastically with another ball of mass  which is fixed at one end of  shaped rigid massless frame as shown in Fig (a). The  shaped frame contains another mass  connected at the other end

The speed of the striking mass after collision is

a)

 backwards

b)

0

c)

 in same direction

d)

 backwards

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

Applying conservation of momentum

   (i)

(ii)

Applying conservation of angular momentum about ,

 (iii)

Solving Eqs. (i), (ii) and (iii), we get

Angle rotated,

127 votes


127