An astronaut has a mass of 85 kg. Take g = 9.8 m/s² on the Earth and g = 1.62 m/s² on the Moon…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
An astronaut has a mass of . Take on the Earth and on the Moon.
- What is the astronaut's weight on the Earth?
- The astronaut's mass on the Moon?
- The weight on the Moon?
Need a reminder? The key ideaShow
Mass () is how much matter, the same everywhere. Weight () is the pull of gravity: . On the Moon (more exactly ); on Jupiter .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) .
Step 2. (b) Still .
Step 3. (c) .
Answer: ; ; , about a sixth of the Earth weight.
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