Question

Problem 5

Answer 1

Given information

If the net force on a system is zero.

If the net torque on other system is zero.

Step-by-step explanation

Step 1.

If the net force are acting on a system in opposite direction from the same pivot distance but they has the same magnitude, the net force on the system is zero.

But the net torque may not be zero.

Draw a diagram to show the scenario in a better way.

In this diagram two opposite forces with the same magnitude are acting two end of the block. Therefore, the net force is zero as two forces cancel out each other.

But the torque is counterclockwise for two forces, therefore, the net torque is not zero.