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College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Introduction

Section: Chapter Questions

Problem 11CQ: How can an estimate be of value even when it is off by on order of magnitude? Explain and give an...

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Question

A 21.0 kg floodlight in a park is supported at the end of a horizontal beam of negligible mass that is hinged to a pole as shown in the figure below. A cable at an angle of θ = 28.0° with the beam helps support the light.

a) By computing the torques about an axis at the hinge at the left-hand end of the beam, find the tension in the cable (in newton).

b) Find the horizontal component of the force (in newton) exerted by the pole on the beam.

c) Find the vertical component of this force (in newton).

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