Please help and show workings.
1 answer:
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To calculate weight we use formula:
When we have two bodies we use general gravity formula:
Where:
G = gravity constant =
Mp = mass of person = 882 / 9.81= 89.9kg
ME = mass of Earth =
r = distance between Earth and person
From these two equations we find that left sides are equal so the right sides must be equal too.
We solve this for r:
r=6371116m = 6371.116km
This is distance from center of Earth. Radius of Earth is 6370km and height above surface is 6371.116 - 6370 = 1.116km or 1116m.
When we have two bodies we use general gravity formula:
Where:
G = gravity constant =
Mp = mass of person = 882 / 9.81= 89.9kg
ME = mass of Earth =
r = distance between Earth and person
From these two equations we find that left sides are equal so the right sides must be equal too.
We solve this for r:
r=6371116m = 6371.116km
This is distance from center of Earth. Radius of Earth is 6370km and height above surface is 6371.116 - 6370 = 1.116km or 1116m.