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Forces proportional to AB,BC and 2CA act...

Forces proportional to AB,BC and 2CA act along the sides of triangle ABC in order. Their resultant represented in magnitude and directions as

A

CA

B

AC

C

BC

D

CB

Text Solution

Verified by Experts

The correct Answer is:
A
For triangle `ABC: vec(AB)+vec(BC)+vec(CA)=vec(0)`
Now `vec(AB)+vec(BC)+2vec(CA)`
`=vec(AB)+vec(BC)+vec(CA)+vec(CA)+vec(0)+vec(CA)=vec(CA)`
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