Question

P, Q and R are three coplanar forces acting at a point and are in equilibrium. Given P = 1.9318 kg wt, sin θ1 = 0.9659, the value of R (in kg wt) is

(a) 0.9659

(b) 2

(c) 1

(d) 1/2.

Answer 1

Correct option (c) 1

Explanation :

Using Lami'* theorem, we have