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The resultant of two forces , one double...

The resultant of two forces , one double the other in magnitude is perpendicular to the smaller of the two forces. The angle between the two forces is ________?

A

`120^(@)`

B

`60^(@)`

C

`90^(@)`

D

`150^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D

`Cos theta= -(a)/(b) = -(1)/(2)`
`theta= 120^(@)`
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