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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

(a) What is the resultant force exerted by the two cables supporting the traffic light in Figure P4.75? (b) What is the weight of the light?

images

Figure P4.75

(a)

To determine
The resultant force exerted by the cables.

Explanation

The horizontal components get cancelled. The vertical components get added up.

The free body diagram is given below.

From the diagram, the resultant force is,

FR=(120N)sin45ο=

(b)

To determine
The weight of the light.

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