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- Answer please! Rotational Motion - JEE Main
A body of mass M while falling vertically downwards under gravity breaks into two parts ;a body B of mass
and any body
of mass
. The center of mass of bodies B and
taken together shifts compared to that of body
towards ,
| Option 1)
body |
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
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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