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College Physics

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

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Chapter
Section
BuyFindarrow_forward

College Physics

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

Four forces act on an object, given by A = 40.0 N east, B = 50.0 north, C = 70.0 N west, and D = 90.0 N south. (a) What is the magnitude of the net force on the object? (b) What is the direction of the force?

(a)

To determine
The magnitude of the net force on the object.

Explanation

Section1:

To determine: The components of force along x and y directions.

Answer:

The component of force along x is 30.0N along the west.

The component of force along y is 40.0N along the west

Explanation:

Given info: The force vectors along with the directions are A= 40.0 N east , B= 50.0 N north , C= 70.0 N west and D= 90.0 N south.

The force along x direction is,

Fx=AC

The difference is taken because the directions of both the vectors are opposite.

Substitute 70.0 N for C and 40.0 for A to get Fx .

Fx=(40.0N)(70.0N)=30.0N (I)

The magnitude of Fx is 30.0N and the direction is along the west.

The force along x direction is,

Fy=BD

The difference is taken because the directions of both the vectors are opposite

(b)

To determine
The direction of the net force.

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