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JEE Advanced 2014 Paper 2

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Question : 4

Total: 60

A planet of radius R =

× (radius of Earth) has the same mass density as Earth. Scientists dig a well of depth

on it and lower a wire of the same length and of linear mass density 10−3kgm−1 into it. If the wire is not touching anywhere, the force applied at the top of the wire by a person holding it in place is (take the radius of Earth = 6×106m and the acceleration due to gravity of Earth is 10 ms−2

96 N
108 N
120 N
150 N

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