Answered: A 240-kg uniform steel beam 7.75 m in…

A 240-kg uniform steel beam 7.75 m in length rests against a frictionless vertical wall, making an angle of 60.0° with the horizontal

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 32P

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

A 240-kg uniform steel beam 7.75 m in length rests against a frictionless vertical wall, making an angle of 60.0° with the horizontal. A 72.0-kg construction worker begins walking up the beam. The coefficient of static friction between the beam and the ground is 0.750. What are the horizontal and vertical forces exerted on the beam by the ground when the worker has walked 3.00 m along the beam? (Enter the magnitude.)

fhorizontal=

fvertical=

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