A ladder 4 m. long having a mass of 15 kg. is resting against a floor and a wall for which the coefficients of static friction are 0.30 for the poor to which a man having a mass of 70 kg. can climb without causing the plank to slip if the plank makes an angle of 40' with the horizontal
A ladder 4 m. long having a mass of 15 kg. is resting against a floor and a wall for which the coefficients of static friction are 0.30 for the poor to which a man having a mass of 70 kg. can climb without causing the plank to slip if the plank makes an angle of 40' with the horizontal
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A ladder 4 m. long having a mass of 15 kg. is resting against a floor and a wall for which the coefficients of static friction are 0.30 for the poor to which a man having a mass of 70 kg. can climb without causing the plank to slip if the plank makes an angle of 40' with the horizontal
Transcribed Image Text:15 kg
2m
70kg
N2
F2
2m
40
Fi
TN
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