Gravitation Question 323
Question: If the earth were to rotates faster than its present speed, the weight of an object will
Options:
A) Increase at the equator but remain unchanged at the poles
B) Decrease at the equator but remain unchanged at the poles
C) Remain unchanged at the equator but decrease at the poles
D) Remain unchanged at the equator but increase at the poles
Show Answer
Answer:
Correct Answer: B
Solution:
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At the equator, $ [g’=g-R{{\omega }^{2}}] $
As $ [\omega ] $ increases, g’ decreases and hence weight decreases.
At the pole, $ [g’=g.] $ So weight remain unchanged.
