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JEE Main Physics Class 11 Gravitation Part 1 Questions
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© examsnet.com
Question : 60
Total: 100
Suppose that the angular velocity of rotation of earth is increased. Then, as a consequence.
[Online April 16, 2018]
There will be no change in weight anywhere on the earth
Weight of the object, everywhere on the earth, wild decrease
Weight of the object, everywhere on the earth, will increase
Except at poles, weight of the object on the earth will decrease
Validate
Solution:
With rotation of earth or latitude, acceleration due to gravity vary as
g
′
=
g
−
ω
2
R
cos
2
ϕ
Where
ϕ
is latitude, there will be no change in gravity at poles as
ϕ
=
90
°
At all other points as
ω
increases g' will decreases hence, weight,
W
=
m
g
decreases.
© examsnet.com
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