Chapter 3, Problem 2A

According to Aristotle, what kinds of motion required no forces?

To determine

According to Aristotle, the kinds of motion which require no forces.

Explanation of Solution

Introduction:

Aristotle classified motions into two types:

1. Natural motion 2. Violent motion

Natural motions are motions due to earth and Violent motion are imposed motions.

Aristotle considered Natural motion is motion which requires no force.

The motion like object falling from a height or motion of stars or planets revolving in circular motion around earth are the motion which require no external force. These motions are due to earth.

Conclusion:

The Natural motion is the motion which does not require any force.