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When a block is placed on a wedge as sho...

When a block is placed on a wedge as shown in figure, the block starts sliding down and the wedge also start sliding on ground. All surfaces are rough. The centre of mass of `(` wedge `+` block `)` system will move.

A

leftward and downward.

B

right ward and downward

C

leftward and upwards

D

only downward.

Text Solution

Verified by Experts

The correct Answer is:
B
Friction force between wedge and block is internal `i.e.` will not hcange motion of `COM`. Friction force on the wedge by ground is external and causes `COM` to move to move towards right. Gravitational force `(mg)` on block brings it downward hence `COM` comes down.
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