which of these is not one of the four basic forces in nature, electromagnetic, gravitational, nuclear, centrifugal

Answer 1

Centrifugal is not one of the four basic forces in nature. The four fundamental forces are:

1. Gravitational Force
2. Electromagnetic Force
3. Weak Nuclear Force
4. Strong Nuclear Force

Centrifugal force is not a fundamental force; it is a perceived force that acts on an object moving in a circular path, resulting from the object's inertia.