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A plank is moving in a horizontal direct...

A plank is moving in a horizontal direction with a constant acceleration `ahati` . A uniform rough cubical block of side `l` rests on the plank, and is at rest relative to the plank.
Let the center of mass of the block be at `(0, l//2)` at a given instant. If `a=g//10`, then the normal reaction exerted by the plank on the block at that instant acts at

A

`(0,0)`

B

`(-l//20,0)`

C

`(-l//10,0)`

D

`(l//10,0)`

Text Solution

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The correct Answer is:
B
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