5. How much would a 90kg man weigh on moon? What will be his weight on the earth?
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Answer:
given:
Earth
W = mg
m = 45 kg
g = gravitational field strength g = 10 N/kg
W = 45 kg x 10 N/kg
W = 450 N
The weight of the girl on the Earth is 450 N
The Moon
W = mg
m = 45 kg
g = gravitational field strength g = 1.6 N/kg
W = 45 kg x 1.6 N/kg
W = 72 N
The weight of the girl on the Moon is 72 N.
The mass of the girl is the same on the Earth and the Moon because the amount of matter in the girl is the same in both places.
However, the weight of the girl on the Earth is much greater than the weight of the girl on the Moon because the Earth’s pull of gravity is much greater than the Moon
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