Question

The Earth is rotating with angular velocity ω about its own axis. R is the radius of the Earth. If Rω² = 0 · 03386 m/ s² , calculate the weight of a body of mass 100 gram at latitude 25°.   (g=9·8m/s²).

Answer 1

Weight W =` m (g-Romega^2cos^2phi)`

`therefore  W=0.1 (9.8-0.03386 xx cos^2 25)`

`therefore W=0.1 (9.8-0.0278)`

`therefore W=0.9772 N`