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If the spinning speed of the earth is in...

If the spinning speed of the earth is increased, then the weight of the body at equator:

A

does not change

B

decreases

C

doubles

D

increases.

Text Solution

Verified by Experts

The correct Answer is:
B
Due to rotation of earth effective gravity is
`g. = g -R omega^(2)cos^(2)lambda` which is less than g.
As `omega ` increase, g. decreases and hence weight of body also decreases.
Thus correct choice is (b).
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