Question

( vec{F}=sqrt{F_{1}^{2}+F_{2}^{2}+2 F_{1} F_{2} cos theta} )
( left[vec{F}_{1}-vec{F}_{2}|leqslant| vec{F}|leqslant| vec{F}_{1}+vec{F}_{2} midright. )
( 2 leqslant|vec{F}| leqslant mid 4 )
( mid B)|1| z} )

# A force of 6 kg and another of 8 kg can be applied together to produce the effect of a single force of- (A) 1kg (B)11kg (C) 15 kg (D) 20 kg

Solution