A construction worker is lifting a uniform beam off the floor. The beam is 2.95 meters long and weighs 495 N. At one moment, the worker is holding the top end of the beam, which is a distance d above the floor and he is pushing on it with a force of P = 138 N, perpendicular to the beam (see diagram). a. What is the angle of the beam, relative to vertical, at that moment? (It is not 45°.) What is the distance d at that moment? What are the magnitudes of the normal force FN and friction force F, the floor exerts on the beam at that moment? b. c.

A construction worker is lifting a uniform beam off the floor. The beam is 2.95 meters long and weighs 495 N. At one moment, the worker is holding the top end of the beam, which is a distance d above the floor and he is pushing on it with a force of P = 138 N, perpendicular to the beam (see diagram). a. What is the angle of the beam, relative to vertical, at that moment? (It is not 45°.) What is the distance d at that moment? What are the magnitudes of the normal force FN and friction force F, the floor exerts on the beam at that moment? b. c.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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