# Chapter 9 - Think and Explain: 60

One-half the astronaut's weight on Earth.

#### Work Step by Step

$$Weight_{on Earth}= G \frac{M_{Earth} m}{(d_{Earth})^{2}}$$ $$Weight_{new \;planet}= G \frac{2 M_{Earth} m}{(2 d_{Earth})^{2}} = \frac{1}{2} \times Weight_{on Earth}$$

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