A 16.0 m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes a 60.0° angle with the horizontal.
Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 840 N firefighter is 3.80 m from the bottom.
Magnitude of the horizontal force

Question

A 16.0 m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes a 60.0° angle with the horizontal.
Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 840 N firefighter is 3.80 m from the bottom. 
Magnitude of the horizontal force

anonymous · Answer

Have you drawn a freebody diagram ? 
Are you familiar with moments, center of gravity and Newton's second law?