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Limiting Friction

A 4kg block A...

Question

A 4kg block A is placed at the top of 8 kg block B when rests on a smooth table. A just slips on B when a force of 20 N is applied on A..The maximum horizontal force F required to make both A and B move together is:

A

36 N

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B

5 N

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C

40 N

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D

6 N

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Solution

The correct option is A 36 N

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