Chapter 7, Problem 34A

What is the reaction force to an action force of 1000 N exerted by Earth on an orbiting communications satellite?

To determine

The reaction force to an action force of $1000\text{N}$ exerted by Earth on an orbiting communications satellite.

Answer to Problem 34A

It will be same as $1000\text{N}$ .

Explanation of Solution

Introduction:

As per Newton’s third law of motion, for every force exerted there is an opposite and equal reaction force.

Now, when the Earth exerts a force of $1000\text{N}$ on the orbiting communication satellite, then as per Newton’s third law, the communication satellite will also exert the reaction force on the Earth which will be of the same magnitude but of opposite direction.

Conclusion:

Hence, the reaction force to the given action force is $1000\text{N}$ .