# Mass versus Weight

**How are weight and mass different?**

To understand the differences we need to compare a few points:

1) Mass is a measurement of the amount of matter something contains, while Weight is the measurement of the pull of gravity on an object.

2) Mass is measured by using a balance comparing a known amount of matter to an unknown amount of matter. Weight is measured on a scale.

3) The Mass of an object doesn't change when an object's location changes. Weight, on the otherhand does change with location.

**If a cube has a mass of 90.91 kilograms and a weight of 200 pounds on Earth, what will its mass and weight be on another planet?**
Base your answer on the gravity stated for each planet.

Please enter your answer in the space provided:

** The Moon has a gravity that is 0.165 of Earth's. **

*If you need a calculator one is available. Click on calculator in the left
frame.*

**Venus has a gravity that is 0.88 of Earth's. **
*If you need a calculator one is available. Click on calculator in the left
frame.*

**Jupiter has a gravity that is 2.34 times greater than Earth's. **
*If you need a calculator one is available. Click on calculator in the left
frame.*

### What do you weigh on another planet?

Enter what you weigh on Earth then click on the next blank space.

**Want to know more about the planets then click here. **

Please send comments to cammarot@is3.nyu.edu.

### Return to the chapter on Mass.