Question

Two forces P and P/2 are acting at a point at
an angle of 60° between them. Resultant of
these forces will be​

Answer 1

Answer:

P√7 /2    or  (P/2) √7

Explanation:

Using vector addition:

 R = √(F₁)² + (F₂)² + 2(F₁)(F₂)cosθ

 R = √(P)² + (P/2)² + 2(P)(P/2)cos60°

 R = √P² + P²/4 + P²(1/2)

    = √P²(1 + 1/4 + 1/2)

    = P√((4 + 1 + 2)/4)

    = (P/2)√7