Question

If the earth rotates faster than its present speed, the weight of an object will

• A. Increase at the equator but remain unchanged at the poles
• B. Decrease at the equator but remain unchanged at the poles
• C. Remain unchanged at the equator but decrease at the poles
• D. Remain unchanged at the equator but increase at the poles

Answer 1

Answer: (B)

Decrease at the equator but remain unchanged at the

poles

Answer 2

$g ^ { \prime } = g - \omega ^ { 2 } R \cos ^ { 2 } \lambda$

Rotation of the earth results in the decreased weight apparently. This decrease in weight is not felt at the poles as the angle of latitude is 90^o.