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Question

The coefficient of friction between 4kg and 5kg block is 0.2 and between 5kg and ground is 0.1 respectively. Choose the correct statements

A
Minimum force needed to cause system to move is 17 N
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B
When force is 4N static friction at all surfaces is 4N to keep system at rest
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C
Maximum acceleration of 4 kg block is 2 m/s2
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D
Slipping between 4 kg and blocks start when F is > 17 N
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