It is said that an object at the equator of the earth moves faster than objects in between the equator and the poles. How?

The angular velocity of earth is $\omega=\frac{2π}{T}=\frac{2π}{24×60×60}=7.27×10^{-5}$ rad/sec. This angular velocity is constant for each portion of earth. The linear velocity of a body at the equator is,

\[v_e=\omega R=7.27×10^{-5}×6400000=465\;\text{m/sec}\]

But a body at poles does not have angular velocity. At the other locations between the equator and the poles, the radius term is less than $R$. So, the velocity is less than $465$ m/sec there. That’s why, it can be claimed that an object at the equator moves faster than objects in between the equator and the poles.

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