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).
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`