explain the noncontact forces?
Asked by Harshita Singh | 28th Jun, 2014, 12:12: PM
Force that acts from a distance, when it is not in contact with the object is called non-contact force. These forces are equal and opposite and depend upon the distance between the two objects.
Types of non-contact forces:
1. Magnetic Force
The attraction or repulsion between the poles of magnets is known as magnetic force.
Like poles of two magnets repel each other and unlike poles attract each other.
A magnet can exert a force on other magnetic or non-magnetic material without being in contact with it.
2. Electrostatic Force
It is the force of attraction or repulsion between the charged substances.
Example: When a comb is rubbed on dry hair, it gets charged. This comb attracts small bits of paper brought near it.
3. Gravitational Force
The attraction of objects towards the earth is known as force of gravity or gravity. It acts on all objects.
Every object in the universe whether a small or large exerts a force on every other object, thus this force is known as a gravitational force.
Answered by Faiza Lambe | 28th Jun, 2014, 10:35: PM
- define gravitational force
- what is non contact force
- How can we say that force is an interaction between 2 objects if non contact force is also there?
- What do we call such forces that do not require any physical contact with the object on which they act? Give two examples of such forces.
- What is gravitational force? Give two examples from your daily life.
- What happens when two magnets are brought near each other?
- Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
- A rocket has been fired upwards to launch a satellite in its orbit. Name the non contact force acting downwards on the rocket immediately after leaving the launching pad.
- Why does an object always fall downwards and not upwards?
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