In the diagram above, MN is perpendicular to ON and MR what is the difference between the…

JAMB 1980

In the diagram above, MN is perpendicular to ON and MR what is the difference between the

In the diagram above, MN is perpendicular to ON and MR what is the difference between the moment about N of the force of 20 Newtons applied along MP an its moment about O.

A. Zero

B. 0.2N.m

C. 0.4N.m

D. 0.8N.m

E. 0.6N.m

Correct Answer: Option A

Explanation

There is absolutely no need to go through any calculation for this question! Since Moment of force = Force × Perpendicular distance and looking at the diagram carefully, you will notice that point O and point N are at the same perpendicular distance to the 20N Force. So, it simply means they will have the same moment, so their difference will be zero!

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