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The greatest and least resultant of two ...

The greatest and least resultant of two forces are `7N` and `3N` respectively. If each of the force is increased by `3 N` and applied at `60^(@)`.The magnitude of the resultant is

A

`7 N`

B

`3 N`

C

`10 N`

D

`sqrt129N`

Text Solution

Verified by Experts

The correct Answer is:
D
`P+Q=7,P-Q=3,P^(1)=P+3,Q^(1)=Q+3`
`R=sqrt(P^(1^(2))+Q^(1^(2))+2P^(1)Q^(1)costheta)`
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Knowledge Check

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