Question

. Two blocks (A) 2 kg and (B) 5 kg rest one over the
other on a smooth horizontal plane. The coefficient
of static and dynamic friction between (A) and (B) is
the same and equal to 0.60. The maximum
horizontal force F that can be applied to (B) in order
that both (A) and (B) do not have any relative
motion is:
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Answer 1

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Answer 2

Explanation:

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