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

question 58

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 $\degree$ with the ground,find the force of friction of the ground on the foot of the ladder.

• A)7.8 x 10² N
• B)2.0 x 10² N
• C)50 N
• D)1.7 x 10² N

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