At which angular speed the earth should rotates so that the apparent weight of an object at equator will become zero ?

Explanation

To determine the angular speed at which the Earth should rotate so that the apparent weight of an object at the equator becomes zero, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Apparent Weight**:
The apparent weight \( W' \) of an object is given by the formula:
\[
W' = mg - mR_e \omega^2 \cos^2(\lambda)
...