100:43 13 In the opposite figure, the wall is smooth and the ground is rough where \( \mu_{s}=\frac{1}{3} \) Then the greatest distance a man of weight 80 kg. wt can ascend is ... a) 7.5 b) 10 c) 5 d) 2.5
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The forces include the weight of the man (W = 80 kg × 9.8 m/s² = 784 N), the normal force (N) from the ground, and the frictional force (f) which prevents slipping. Show more…
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