Question

Two forces whose magnitudes are in the ratio 3:5 give a resultant of 35N. If the angle between them is $60^\circ$, the magnitude of each force is.

• A. 3N, 5N
• B. 9N, 25N
• C. 15N, 25N
• D. 21N ,35N

Answer 1

Answer: (C)

15N, 25N

Answer 2

$R = 2F \, \cos \, 60 = F , \alpha = \frac{\theta}{2}$ makes equal angle with both vectors .