Question

A hiker, who weighs 1085 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3370 N, and rests on two concrete supports, one at each end. He stops one-fifth of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge at each end?

near end	N
far end	N

The drawing shows a person (weight W = 595 N, L₁ = 0.853 m, L₂ = 0.408 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.

force on each hand	N
force on each foot

Answer 1