Answer me pls....
ques1. Write a short note on electrostatic force.
ques2. Do you think sometimes application of force does not result in change in the state of motion? describe with example.
ques3. Porters place a round piece of cloth on their head when they have to carry heavy loads. why ?
ques4. Force of friction always acts on moving objects and its direction shall be_______ .
Answers
Answer:
1 ans-
The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges. The electric force between stationary charged body is conventionally known as the electrostatic force. It is also referred to as Columb's force.
2ans- It is common experience that many a time application of force does not result in a change in the state of motion. For example, a heavy box may not move at all even if you apply the maximum force that you can exert. Again, no effect of force is observed when you try to push a wall.
3ans-By placing the thick round piece of cloth on their head, the porter increases the area of contact of load with their head. Now the force of load falls on the larger area due to which the pressure on the head decreases and it becomes easier for a porter to carry the heavy load.
4ans-Force of friction always acts on moving objects and its direction shall be Opposite to the direction of motion.
1. The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges. The electric force between stationary charged body is conventionally known as the electrostatic force. It is also referred to as Columb's force.
2. It is common experience that many a time application of force does not result in a change in the state of motion. For example, a heavy box may not move at all even if you apply the maximum force that you can exert. Again, no effect of force is observed when you try to push a wall.
3. By placing the thick round piece of cloth on their head, the porter increases the area of contact of load with their head. Now the force of load falls on the larger area due to which the pressure on the head decreases and it becomes easier for a porter to carry the heavy load.
4. The force of friction always acts on all the moving objects and its direction is always opposite to the direction of motion. Since the force of friction arises due to contact between surfaces, it is also an example of a contact force.
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