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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:
1043906_793a7b2f649a4aa3affb3814770b8b3f.png

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
1964687_1043906_ans_0d1754f36b344b3d89191433c1169dfd.jpg

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