railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Equilibrium
If the two forces P and Q act at a point and the angle between the two forces be θ, then the resultant is given by:
1
\(\sqrt {{P^2} + {Q^2} + 3PQ\cos \theta }\)
2
\(\sqrt {{P^2} + {Q^2} + 2PQ\cos \theta }\)
3
\(\sqrt {{P^2} + {Q^2} + PQ\cos \theta }\)
4
\(\sqrt {{P^2} + {Q^2} + 0.5PQ\cos \theta }\)