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The vector sum of two forces is perpendi...

The vector sum of two forces is perpendicular to their vector differences. In that case, the forces

A

are not equal to each other in magnitude

B

are parallel

C

are perpendicular

D

are rqual to each other in magnitude

Text Solution

Verified by Experts

The correct Answer is:
D
(d) We have (A+B).(A-B)=0
`thereforeA.A+B.A-A.B-B.B=0`
thereforeA^(2)+ABcostheta-ABcostheta-B^(2)=0`
`thereforeA=B`
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