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

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 20PE: At takeoff, a commercial jet has a 60.0 m/s speed. Its tires have a diameter of 0.850 m. (a) At how...

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