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Standard XII
Physics
Displacement of COM:Application
Question

A mass m is at rest on a inclined plane structure of mass M which is further resting on a smooth horizontal plane. Now if the mass starts moving, the position of centre of mass of the system will :
149205_d8d7b8621d474ac187a8f398d165915b.png
  1. Change along the horizontal
  2. Remain the same
  3. Change along the vertical
  4. Change along the vertical while remains same along the horizontal

A
Change along the vertical
B
Remain the same
C
Change along the horizontal
D
Change along the vertical while remains same along the horizontal
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Solution
Verified by Toppr

Here the system is wedge+block. Net force on the system in horizontal direction is "0". hence the centre of mass of the system will not move in horizontal direction. Now for vertical direction there is a force that is the mass of the wedge and the block and hence the centre of mass changes in this direction.
Hence option d is correct

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149205_d8d7b8621d474ac187a8f398d165915b.png
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