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Two equal forces (P each) act at a point...

Two equal forces (P each) act at a point inclined to cach other at an angle of `120^(@)`. The magnitude of their resultant is

A

`P//2`

B

`P//4`

C

`P`

D

`2P`

Text Solution

Verified by Experts

The correct Answer is:
C
Resultant force   =`sqrt(P^(2)+P^(2)+2PxxPxxcos120^(@))` 
=`sqrt(P^(2)+P^(2)-(2xxP^(2)xx(1)/(2)))=P`
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