Question

Two forces of magnitude F have a resultant of the same magnitude F. The angle between the two forces is

• A. 45°
• B. 120°
• C. 150°
• D. 60°

Answer 1

The correct option is (A) 120°

Given,

Magnitude of the two forces = F

Resultant of the two forces = F

We have to find the angle between the forces

We know,

Resultant of the forces is given as

$F=\sqrt{(F{)}^2+(F{)}^2+2FFcos\theta }\Rightarrow \theta ={120}^o$

Hence, the angle between the forces is ${120}^0$