Physics

Problem

If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the speed with which the earth would have to rotate about its axis so that the person at the equator will weight

\frac{3}{4}W

. Radius of the Earth is 6400 km and

g = 10 \text{ m/s}^2

. a.

1.1 \times 10^{-3} \text{ rad/s}

0.83 \times 10^{-3} \text{ rad/s}

0.63 \times 10^{-3} \text{ rad/s}

0.28 \times 10^{-3} \text{ rad/s}

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