Question

A circular metal plate with radius 0.22 m. Calculate the net torque about O given that F₁ = 17.4 N, F₂ = 7.2 N, F₃ = 14 N, F4 = 5.4 N, θ₁ = 58°, and θ₂ = 38°.

Answer 1

$F_2\cdot\sin38°\cdot0.22-F_1\cdot\sin58°\cdot0.22+F_4\cdot0+F_3\cdot0.22=$

$=7.2\cdot\sin38°\cdot0.22-17.4\cdot\sin58°\cdot0.22+$

$+5.4\cdot0+14\cdot0.22=0.81\ (N\cdot m)$ clockwise . Answer