Question

How does the shape of earth affect the value of acceleration due to gravity

Answer 1

From parallelogram law of vector addition:


The value of ω is 7.2921159 × 10−510−5. So, the term containing ω4ω4 is much smaller than 1 and ω2ω2 so can be neglected


At poles; φ = 90°

g’ = g.