Problem 13Q

Problem

When an object falls freely under the influence of gravity there is a net force mg exerted on it by the Earth. Yet by Newton's third law the object exerts an equal and opposite force on the Earth. Does the Earth move? Explain.

Problem 13Q

Solution 13Q:

We have to understand the reason why don’t the earth move even though we are exerting a force on it.

Step 1 of 3

Concept:

Newton’s third law: For every action, there is an equal and opposite reaction.

Newton’s second law: The force F acts on mass m produces an acceleration a in the object. Mathematically, F=ma.