A body  A of mass M while falling vertically downwards under gravity breaks into two parts ;a body B of mass \frac{1}{3}M and any body C of mass \frac{2}{3}M . The center of mass of bodies B and C taken together shifts compared to that of body  A towards ,

Option 1)

body C

Option 2)

body B

Option 3)

depends on height of breaking

Option 4)

does not shift

Answers (1)

As we learnt in:

If External Force = 0 and Velocity of Centre of Mass = 0 -

Then centre of mass remains at rest. Individual components of a system may move and have non zero momentum due to  mutual forces but the net momentum of system remains zero. 

-

 

 

The centre of mass of bodies B and C taken together does not shift as no external force is applied horizontally.


Option 1)

body C

It is an incorrect option.

Option 2)

body B

It is an incorrect option.

Option 3)

depends on height of breaking

It is an incorrect option.

Option 4)

does not shift

It is the correct option.

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