A box weighs 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is…

A box weighs 196N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g=10ms-2 at the north pole and the radius of the earth =6400km ):
  1. 195.66N
  2. 194.32N
  3. 194.66N
  4. 195.32N

Solution

At pole, weight mg=196
m=19.6kg
At equator, weight =mg-mω2R
=196-19.62π24×36002×6400×103
=195.32N

Asked in: JEE Main 2020 (07 Jan Shift 2)

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