Test Academy | A weightless ladder, 20 ft long rests against a frictionless wall at an angle of 60° with the horizontal. A 150 pound man is 4 ft from the top of the ladder. A horizontal force is needed to prevent it from slipping. Choose the correct magnitude from the following 175 lb, 100 lb, 70 lb, 150 lb

Question

A weightless ladder, 20 ft long rests against a frictionless wall at an angle of 60° with the horizontal. A 150 pound man is 4 ft from the top of the ladder. A horizontal force is needed to prevent it from slipping. Choose the correct magnitude from the following

Options :

175 lb
100 lb
70 lb
150 lb

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