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ABCDE is a pentagon. Forces AB,AE,DC and...

ABCDE is a pentagon. Forces AB,AE,DC and ED act at a point. Which force should be added to this systemm to make the resultant 2AC?

A

AC

B

AD

C

BC

D

BD

Text Solution

Verified by Experts

The correct Answer is:
C
`AE+ED+DC+AB`
`=AD+DC+AB=AC+AB`
Obviously, if BC is added to this system, then it will be
`AC+AB+BC=AC+AC=2AC`.
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