Question

If the speed of rotation of earth about its axis increases, then the weight of the body at the equator will

• A. increase
• B. decrease
• C. remain unchanged
• D. sometimes decrease and sometimes increase

Answer 1

The correct option is B decrease

$g^{\prime }=g-R{\omega }^2$
As $\omega$ increases, $g^{\prime }$ decreases.

So, the weight of the body decreases.