Question

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

Answer 1

The resultant of the two forces, each of P, acting at an angle theta is; R=√P^2+P^2-2P^2cos(theta) R=√2P^2 [1-cos (theta)] R=√2P^2 [2sin^2 (theta)/2] R=2√Psin (theta)/2. Note: In all the above steps root is for the whole.But in the last step root is only for P.