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Determine the horizontal force acting in the given figure.

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in Engineering Mechanics by (701k points)
Determine the horizontal force acting in the given figure.

(a) 80cos30

(b) 60cos30

(c) 40cos30

(d) 8cos30

The question was posed to me during an online exam.

Asked question is from Characteristics of Dry Friction topic in chapter Friction of Engineering Mechanics

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The correct option is (a) 80cos30

For explanation I would say: The net forces acting on the body is shown by the help of the resultant forces. There are two types, first the frictional and the second is the normal. This is because the resultant forces have the sum of all the forces which are acting on the direction which is same.

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