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What is the linear velocity of a person ...

What is the linear velocity of a person at equator of the earth due to its spinning motion? (Radius of the earth = 6400 km.)

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The earth completes one rotation in `24` hours. Its angular velocity.
`omega=(2piN)/(t)-(2pixx1)/(24xx60xx60)=(pi)/(43,200)rads^(-1)`
`R=6.4xx10^(6)m`, The linear velocity,
`v=Romega=6.4xx10^(6)xx(pi)/(43,200)=465.5m//s`
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The altitude at which the weight of a body is only 64% of its weight on the surface of the earth is (Radius of the earth is 6400 km)

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