railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Equilibrium
When two equal forces F act at an angle θ, the resultant force is given by which of the following expressions?
1
\(R=2Fsin(\frac{\theta}{2})\)
2
\(R=F_1+F_2
\)
3
\(R=F_1-F_2\)
4
\(R=2Fcos(\frac{\theta}{2})\)