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Determine the speed with which the earth...

Determine the speed with which the earth would have to rotate on its axis , so that a person on the equator would weigh `(3)/(5)` th as much as the person. Take `R = 6400 km`.

A

`3. 28 xx 10^(-4) "rad"//"sec"`

B

`7.826 xx 10^(-4) "rad"//"sec"`

C

`3. 28 xx 10^(-3) "rad"//"sec"`

D

`7.28 xx 10^(-3) "rad"//"sec"`

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