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When a body is taken from poles to equator on the earth, its weight :

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By Expert Faculty of Sri Chaitanya
a
increases
b
decreases
c
remains the same
d
increases at south pole and decreases at north pole

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detailed solution

Correct option is B

Earth's gravitational attraction and hence weight of an object decreases at equator compared to the poles as the equator is situated at a greater distance from the centre of the earth compared to the poles g=GMr2 .Also due to spin  of earth about its own geometrical axis , the object placed on the surface of earth at the equator experiences centrifugal force, which reduces the weight of the object .
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ctaimg

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If R is the radius of earth, ω is its angular velocity and gp is the value of acceleration due to gravity at the poles, then effective value of acceleration due to gravity at the latitude λ=60 will be equal to

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