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Second Law of Motion

Consider the ...

Question

Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table:

(i) All block moves with the same acceleration

(ii) The forces acting on each block are the same

A

(i) Only

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B

(ii) only

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C

Both (i) and (ii) only

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D

Neither (i) nor (ii)

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Solution

The correct option is A
(i) Only

As we can see from the free body diagram, forces acting on each block is different. But, they will all move together as a system as same net force acts on them, and therefore they will have the same acceleration.

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