Question

If the earth stops rotating, the apparent value of g on its surface will

• A. Increase everywhere
• B. Decrease everywhere
• C. Remain the same everywhere
• D. Increase at some places and remain the same at some other places

Answer 1

The correct option is D

Increase at some places and remain the same at some other places

Imagine earth is not rotating

Let's draw free body diagram of an object kept on weighting scale at equator.

When earth is not rotating the centripetal acceleration will be zero.Then the weight will be $\Rightarrow$ = mg
Whereas at the poles rotation of earth will have no effect on the weight