Q.

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

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a

increases

b

decreases

c

remains the same

d

increases at south pole and decreases at north pole

answer is B.

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Detailed Solution

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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