The force exerted by rotation of the earth is known as :

Question

Accepted Answer

The force exerted by the rotation of the Earth is known as the Coriolis force. This force is an apparent force that arises due to the Earth's rotation. It affects the motion of objects moving within a rotating reference frame, such as the Earth. The Coriolis force is crucial in meteorology and oceanography, as it influences wind patterns and ocean currents, causing them to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection is essential for understanding weather systems and the dynamics of the Earth's atmosphere.

Now, let's explain why the other options are incorrect:

1. **Nuclear Force**: This force is one of the fundamental forces of nature, responsible for holding the nuclei of atoms together. It operates at the subatomic level and has no relation to the Earth's rotation. Therefore, it is not the force exerted by the Earth's rotation.

2. **Spring Force**: This is a mechanical force that occurs when a spring is compressed or stretched. It follows Hooke's Law and is not related to the Earth's rotation. Spring force is a contact force and does not have any influence on large-scale phenomena like the Coriolis effect.

3. **Gravitational Force**: While gravitational force is a fundamental force that acts between masses, including the Earth and objects on it, it is not specifically related to the Earth's rotation. Gravitational force is responsible for keeping objects grounded on Earth and for the orbits of celestial bodies, but it does not cause the deflection of moving objects due to the Earth's rotation.

In conclusion, the Coriolis force is the correct answer because it directly results from the Earth's rotation and significantly impacts the movement of air and water across the planet.