Engineering Mechanics Test Questions

Q.  In the equation of virtual work, following force is neglected_______________________?

a. reaction of any smooth surface with which the body is in contact
b. reaction of a rough surface of a body which rolls on it without slipping
c. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
d. all of the above
e. none of the above


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