Question

A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.50 m long and weighs 600.0 N. At a certain instant the worker holds the beam momentarily at rest with one distance d = 1.50 m above the floor, as end at shown in the figure, by exerting a force P on the beam, perpendicular to the beam. (a) What is the magnitude P? (b) What is the magnitude of the (net) force of the moor on the beam?

Answer 1