Find the resultant in magnitude and direction of forces 10N, 20N, 30N, 40N, acting respectively in the direction 60,120,180 and 270.

Question

I tried drawing out the forces with the respective angles but the angles are more than 360.#confused

Answer 1

nothing wrong with that

you could just use the trig-vector notation

resultant = (10cos60,10sin60) + (20cos120,20sin120) + (30cos180,30sin180) + (40cos270,sin270)
= (5, 5√3) + (-10, 10√3) + (-30, 0) + (0, -40)
= ( -35, 5√3-40 ))

your sketch will confirm that

Answer 2

The two forces of 10n and 12n.calculate the resultant and the direction of two vectors.