Three forces of magnitude 30, 60 and P Newton acting on a particle and particle is in equilibrium. If the angle between the first two forces is `60^(@
Three forces of magnitude 30, 60 and P Newton acting on a particle and particle is in equilibrium. If the angle between the first two forces is `60^(@)`, the value of P is
A. `25 sqrt2`
B. `30 sqrt3`
C. `30 sqrt6`
D. `30 sqrt7`
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Correct Answer - D
`P = sqrt(30^(2) + (60)^(2) + 2(30) (60) cos 60^(@))`
`= 30 sqrt7`
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