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2014-10-18T23:28:27+05:30

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The ceiling pulls the chain with a force equal to the sum of weights of chain and the body.

So the pulling force = (w1 + w2) 
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2014-10-20T10:24:49+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
See diagram for clear understanding of the action forces and reaction forces.

Since the body, chain and ceiling are in equilibrium and at rest, the action and reaction forces are equal. 

See the free body diagrams for the body, chain and ceiling.

The force with which the chain is pulled by ceiling is = W1 + W2.
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