Question

12 Four forces acting ou a circular object as shown in fig. The net resultant torque about
O is where radius in.
10N
20 N
D) Zero
B) 20 Nm
C) 40 Nm
D) 80 Nm​

Answer 1

Answer:

Force .

The pair of 45 N force are in opposite direction but the pair of 30 N force act in same direction . So, there exist a positive force on the block.

Torque

The pair of 30N force are in opposite direction . One is in clockwise and another is in anti-clockwise direction. But the pair of 40 N force are both in clockwise direction. So, they will added and gives a non-zero torque