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Answers
Answer:
We know this from Newton’s universal law of gravitation, which takes the form
F = G mEmO/d2
where
F = force of gravity in newtons
G = the universal gravitation constant
mE = mass of the Earth
mO= mass of the object
d = distance between the object centres.
Using this formula shows that the force of gravity acting on a 70 kg person on a 10 m diving board is 688 N compared to 667 N for the person at an altitude of 100 km above the Earth’s surface.
Energy needed to reach an altitude of 100 km
The work that needs to be done on a 1 kg object to reach a height of 100 km above the Earth’s surface is calculated in the following way.
work done = gravitational force x vertical height
= (1 x 9.8) N x (100 x 1000) m
= 980,000 joules
Step-by-step explanation:
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