2. Explain with the help of an example how magnetism is a form of energy.
Answers
Answer:
Magnetism is a form of energy because it experience an attractive or repulsive force. When we place the north pole of one magnet and south of another they attract. When we place iron nails close to a magnet they attract the iron nails.
Explanation:
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Explanation:
To answer this we first need to look at what potential energy is.
An object can have potential energy if there are two forces acting on it in opposite directions.
An example is a 1kg rock on the top of a cliff, the force of gravity is pulling it down with a force of 1kg and the cliff is pushing up with a force of 1kg and it stays still. You can remove the force that is holding it up by kicking it off the cliff and that potential energy will convert into kinetic energy. (this may need a separate question and answer for explanation)
Another example is an archer pulling an arrow back in a bow. The force in archer’s arm is matched by the force in the bow and its string. He can stop the force in his arm pulling the arrow back on the string by letting go. Again, the potential energy gets converted into kinetic energy.
Then we come to a ball bearing being held a few centimeters from a magnet. The magnetic force is attracting the ball bearing and the force in the experimenter’s hand is acting against that force. At this point the ball bearing has magnetic potential energy. When the experimenter lets go the ball bearing flies towards the magnet as that magnetic potential energy converts to kinetic energy.
Energy is a subject that is often misrepresented in popular accounts and unfortunately this often creates confusion. If you want to understand energy I would recommend sticking to bona fide scientific sources. These can be understood because they makes sense.