JEE MAIN - Physics (2020 - 7th January Evening Slot - No. 5)
A box weight 196 N 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 = 10 ms–2 at the north pole and the radius
of the earth = 6400 km) :
194.32 N
195.66 N
195.32 N
194.66 N
Explanation
At equator, weight
W = Mg - M$${\omega ^2}$$R
= 196 - $$\left( {19.6} \right){\left( {{{2\pi } \over {24 \times 3600}}} \right)^2} \times 6400 \times {10^3}$$
= 195.32 N
W = Mg - M$${\omega ^2}$$R
= 196 - $$\left( {19.6} \right){\left( {{{2\pi } \over {24 \times 3600}}} \right)^2} \times 6400 \times {10^3}$$
= 195.32 N
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