A 14.5 m uniform ladder weighing 480 N rests against a frictionless wall. The la

Question

A 14.5 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a 57.0 ° angle with the horizontal.

(a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 830 N firefighter is 4.00 m from the bottom. Magnitude of the horizontal force

______ N a) Toward the Wall b) Away from the Wall

Magnitude of the vertical force

_______ N a) Up b) Down

(b) If the ladder is just on the verge of slipping when the firefighter is 9.40 m up, what is the coefficient of static friction between ladder and ground?

Explanation / Answer

replace values here

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