Question

There are mainly two types of forces which are being stated in the free body diagram, and they are generally the resultant of various forces which are being acted over the body. Which are they?

(a) Normal and Frictional

(b) Normal and Vertical

(c) Vertical and Frictional

(d) Normal and Fractional

This question was addressed to me in final exam.

My doubt is from Problems Involving Dry Friction in portion Friction of Engineering Mechanics

Answer 1

Right option is (a) Normal and Frictional

To elaborate: The net forces acting on the body is shown with the help of the resultant forces. There are two types, first the frictional and the second is normal. This is because the resultant forces have the sum of all the forces which are acting in the direction which is same.