Gravitation - Result Question 21
21. Assuming earth to be a sphere of uniform density, what is the value of ’ ’ in a mine 100 below the earth’s surface? (Given, )
(a)
(b)
(c)
(d)
[2001]
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Answer:
Correct Answer: 21. (a)
Solution:
- (a) We know that effective gravity
at depth below earth surface is given by
Here,