An 80-Kg Man Is One Fourth of the Way Up

question 18

Multiple Choice

An 80-kg man is one fourth of the way up a 10-m ladder that is resting against a smooth,frictionless wall.If the ladder has a mass of 20 kg and it makes an angle of 60° with the ground,find the force of friction of the ground on the foot of the ladder.

• A) N
• B) N
• C) N
• D) N
• E) ​ N

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