|←||044 - Stamp Stumper||045 - Lunar Weight||046 - Star in the Sky||→|
The force of gravity on the moon is about one-sixth of that on Earth. This means that on the moon, an object weighs about one-sixth of what it does on Earth. If you bring a 600 gram weight and a scale to the moon and gently place the weight on the scale, which of the following weights will the scale indicate?
A: 0 grams
B: Lighter than 100 grams
C: Exactly 100 grams
D: Heavier than 100 grams
Think about what parts the scale is made up of.
The scale will indicate a weight of less than 100g.
A scale is always set to zero with the weight of the scale tray included. So when the same scale is brought to the moon, the tray weighs one-sixth of what it did when the scale was set, and the scale will now indicate less than 0g when nothing is in the tray.
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