Question

Which of the following can never be a pushing force?

• A. Electrostatic force
• B. Magnetic force
  
• C. Muscular force
  
• D. Gravitational force
  

Answer 1

The correct option is D Gravitational force


Electrostatic force between two like charges is a repulsive force. This means that the charges oppose each other by applying pushing force.
Similarly, the magnetic force between two like poles is a repulsive force. This means that the poles oppose each other by applying pushing force.
Muscular force is the force which we exert by the muscles of our body. Thus it can be a push or a pull depending upon our own will.
Gravitational force on the other hand can never be a pushing force. It is the pulling force which the earth applies on all the objects, towards its centre.