Introduction to Gravitational force

Classify the following into contact and non contact forces: 1. Tension 2. Friction 3. Gravitational force 4. Magnetic force.

Is it true the reaction of as gravitational force is always grativational, of an electromagnetic force is always electromagnetic and so on?

Which of the following statements is correct regarding the gravitational force?

Identify the non-contact forces: Gravitational force, Tension force, Friction force, Magnetic force, Air resistance force, Electrostatic force.

Calculate the ratio of electric to gravitational force between two electrons.

Law of gravitation gives the gravitational force between

Assertion : The principle of superposition is not valid for gravitational force. Reason : Gravitational force is a conservative force.

Tides are formed due to gravitational force of

Classify the following amongst contact and non contact forces : gravitational force.

Which of the following forces is not fundamental force in nature 1. Gravitational force 2.Electromagnetic force 3.Strong nuclear force 4.Tension?