Why does needle of magnetic compass deflected when brought near a bar magnet?
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It so happens that all matter intrinsically has 4 innate forces built-in. See — Fundamental interaction - Wikipedia The strong force, the weak force, the gravitational force, and the electromagnetic force. The strong and weak forces work at the atomic level. The gravitational and electromagnet forces are available over an almost infinite area, although growing weaker and weaker with distance.
The electromagnetic force is stronger in certain elements, like iron. When iron is magnetized it will attract other pieces of iron. The iron when magnetized will exhibit polarity, which we refer to as the north and south seeking poles of the magnet. Obviously the end that points toward the north magnetic pole of the Earth is referred to as the north seeking pole, and the opposite for the south seeking pole.
Distance is always a factor when using magnets. Motors are designed with close spacing to increase the magnetic fields.
A compass is made by using a magnetized piece of iron, which points towards the poles of the Earth. When another magnet is near, the compass will point towards the other magnet as its field is stronger than the Earth’s magnetic field at that point. The compass will even point towards other pieces of iron that are not magnetized. So to properly use a compass one must always insure that no other iron is nearby before taking readings.
There is the story of a troop of boys using a compass to navigate through the woods. The boy with the compass was behind the boy whose backpack contained the cooking skillet, and the compass inveritably pointed toward the skillet instead of north.
The electromagnetic force is stronger in certain elements, like iron. When iron is magnetized it will attract other pieces of iron. The iron when magnetized will exhibit polarity, which we refer to as the north and south seeking poles of the magnet. Obviously the end that points toward the north magnetic pole of the Earth is referred to as the north seeking pole, and the opposite for the south seeking pole.
Distance is always a factor when using magnets. Motors are designed with close spacing to increase the magnetic fields.
A compass is made by using a magnetized piece of iron, which points towards the poles of the Earth. When another magnet is near, the compass will point towards the other magnet as its field is stronger than the Earth’s magnetic field at that point. The compass will even point towards other pieces of iron that are not magnetized. So to properly use a compass one must always insure that no other iron is nearby before taking readings.
There is the story of a troop of boys using a compass to navigate through the woods. The boy with the compass was behind the boy whose backpack contained the cooking skillet, and the compass inveritably pointed toward the skillet instead of north.
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a body is projected with a velocity of 40 metre per second after 2 second it crosses vertied pole of 20. 4 metre calculate the angle of projection
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