Question

What is the source of the centripetal force that a planet requires revolving around the Sun?

• A. Gravitational Force
• B. Nuclear Force
• C. Electrostatic Force
• D. Frictional Force

Answer 1

The correct option is A Gravitational Force

Gravitational force is the source of the centripetal force that a planet requires revolving around the Sun. This force depends on the product of the masses of the planet and sun and the distance between them. If the force becomes zero, due to lack of centripetal force, the planet would move tangentially outward to the circular path.