Question

Forces 5N, 12N and 13N are in equilibrium If $1km/h$ . then the angle between 5N force and 13N force is

• A. $\text{3 }km/h$
• B. $\text{4 }km/h$
• C. $\text{5 }km/h$
• D. ${10}^{-6}{m}^2$

Answer 1

Answer: (B)

As $5^2+{12}^2={13}^2$ , so these forces will be acting along the side of a right angled triangle. Angle between 5N and 13N.
$={180}^o-({90}^o+{23}^o)$ $={67}^o$