In the figure, m A = 2 kg and m B = 4 kg . For what minimum value of force F , A starts slipping over B g = 10 m s - 2

Question

In the figure, m A = 2 kg and m B = 4 kg . For what minimum value of force F , A starts slipping over B g = 10 m s - 2, 24 N, 36 N, 12 N, 20 N

MARKS App · Accepted Answer

For A , m A a = f L 1 m A a = μ 1 m A g a = μ 1 g For B , F - f L 1 + f L 2 = m B a F = μ 1 m A g + μ 2 m A + m B g + m B μ 1 g F = μ 1 + μ 2 m A + m B g F = 0.2 + 0.4 2 + 4 10 F = 36 N

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