Question

Four equal and parallel forces are acting on a rod at distances of 20 cm, 40 cm, and80cm respectively , from one end of rod. Under the influence of these forces, the rod is

Answer 1

the rod rotates anti clockwise

This is because The torque about anti clockwise direction is more than that of the torque in clockwise direction.

Zc = 20F + 60F = 80F

Za = 40F + 80F = 120F

hence, Za ≠ Zc and Za is less than Zc