before leaving Earth, an astronaut measures 3. Before leaving Earth, an astronau

Question

before leaving Earth, an astronaut measures 3. Before leaving Earth, an astronaut measures his mass as 75 kg. The acceleration due to gravity on the Moon is about a sixth of that on Earth. (a) What is the weight of the astronaut when he is standing on Earth? (b) What would his mass be if he was standing on the Moon? (c) What would his weight be if he was standing on the Moon? (d) What would his mass be if he was floating (at rest) in outer space? (e) What would his weight be if he was floating (at rest) in outer space?

Explanation / Answer

a) Weight w=mg. M=75kg

On Earth g=9.8m/s2

W=75*9.8=735N

b) mass won't change. So m=75kg

c) W=mg/6=735/6=122.5N

d) 75kg

e) 0 zero

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