1) To train astronauts to work on the moon, where the free-fall acceleration is

Question

1)

To train astronauts to work on the moon, where the free-fall acceleration is only about 1/6 of that on Earth, NASA submerges them in a tank of water. If an astronaut, who is carrying a backpack, air conditioning unit, oxygen supply, and other equipment, has a total mass of 281 kg, determine the following quantities.

1.) her weight on Earth (including backpack, etc.)    kN

2) her weight on the moon (including backpack, etc.) N

3) the required upward buoyancy force of the water during her training for the moon's environment on Earth kN

Explanation / Answer

1. Weight of earth=281*9.8=2753.8 N=2.7538 kN

2. Weight of moon=281*9.8/6=459 N

3. Upward buoyancy force required=2753.8-459=2294.8 N

                                                                =2.2948 kN

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