Four identical blocks each of mass m are kept on a horizontal frictionless plane in contact with adjacent blocks as shown in figure. If a force F is applied on the system, then

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net force on the block C is F/8

net force on the block C is F/4

net force on the block C is F/2

net force on the block C is 3 F/4

answer is B.

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Detailed Solution

If acceleration of the system isF = 4 ma→ a = F/4 m∴ since acceleration of each block is F/4 m∴ net force on each block is F/4

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