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 500 N. At a certain instant the worker holds the beam momentarily at rest with one end at distance d = 1.50 m above the floor, as shown in the figure, by exerting a force on the beam, perpendicular to the beam. (a) What is the magnitude P? (b) What is the magnitude of the (net) force of the floor on the beam? (c) What is the minimum value the coefficient of static friction between beam and floor can have in order for the beam not to slip at this instant?

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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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 500 N. At a certain instant
the worker holds the beam momentarily at rest with one end at distance d = 1.50 m
above the floor, as shown in the figure, by exerting a force on the
beam, perpendicular to the beam.
(a) What is the magnitude P?
(b) What is the magnitude of the (net) force of the floor on the beam?
(c) What is the minimum value the coefficient of static friction
between beam and floor can have in order for the beam not to slip at
this instant?
Transcribed Image Text: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 500 N. At a certain instant the worker holds the beam momentarily at rest with one end at distance d = 1.50 m above the floor, as shown in the figure, by exerting a force on the beam, perpendicular to the beam. (a) What is the magnitude P? (b) What is the magnitude of the (net) force of the floor on the beam? (c) What is the minimum value the coefficient of static friction between beam and floor can have in order for the beam not to slip at this instant?
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