Mass and Weight
5.4 Mass and Weight
By the end of this section, you will be able to:
- Explain the difference between mass and weight
- Explain why falling objects on Earth are never truly in free fall
- Describe the concept of weightlessness
Weight and Gravitational Force
Consider how you would answer these questions. Then bring this to class for a group discussion.
A rock with a weight of 200 N is being pulled upward with an acceleration of 3 m/s2.
(a) What is the mass of the rock?
(b) What is the net force?
(c) What is the magnitude of the applied upward force?