Question

two forces 100N and 80N act at a point makeing an angle 60° between them. determine the magnitude and direction of resultant​

Answer 1

Answer:

The resultant force, R will lie along the longer diagonal of the parallelogram whose sides are the given forces.

Invoking the cosine rule

R2=1002+802–2×100×80cos120∘

From which it is easy to show that R=140N

We have to give the direction of R . Let us find the angle, θ in relation to the force of 80N . We use the sine rule.

sin160∘R=sinθ100

θ=sin−1(100sin120∘)140

θ=38.2∘ to the 80N force

hopes it helps you mark as brainlist if it helps you