Question

The resultant of two forces ,each P, acting at an angle theta is

Answer 1

Answer:2Pcosθ/2

Explanation:

The resultant is √P^2+P^2+2P^2cosθ

=√2P^2(1+cosθ)

[1+cosθ= 2cos^2 θ/2]

=√2P^2(2cos^2θ/2)

=2Pcosθ/2