Question

To balance a moment that measures 50 lbf·ft clockwise, you would need to provide __________.

A) a force of 50 lb. acting vertically

B) a force of 50 lb. acting horizontally

C) one force of 25 lb. acting vertically and one force of 25 lb. acting horizontally

D) another moment measuring 50 lb-ft clockwise

E) None of the above

Answer 1

E) None of the above

To balance this moment we have to provide a moment 50 lb-ft counterclockwise so that total sum of moments at that point becomes zero.

This moment can be provided by a eccentric force which may be vertical or horizontal, line of action of that force should be such that multiplication of force and perpendicular distance produces a counterclockwise moment of 50 lb-ft at that point.

Means many combination are possible.