A magnet will rotate when it is placed in a magnetic field that exerts a torque on it. If the magnet is free to move, the torque causes it to align with the magnetic field lines, causing the magnet to spin until it reaches equilibrium. This rotation can also be influenced by external forces or mechanical systems, such as in electric motors, where the interaction between magnetic fields generates continuous rotation.
You can hang the magnet up on a string, so that it can rotate freely. In that case, it should align with the Earth's magnetic field.
A suspended magnet is usually a magnet suspended by a thin thread and allowed to rotate and swing freely. This will align itself to the Earth's magnetic field providing there is no other magnetic or electromagnetic influnence.
An ordinary bar magnet does not rotate and align itself with the Earth's magnetic field when placed on a table because it is not freely suspended. For a magnet to align with a magnetic field, it needs to be able to rotate freely, allowing its magnetic poles to respond to the external field. When placed on a stable surface like a table, friction and support prevent it from moving, thus inhibiting the alignment with the magnetic field.
If you suspend the magnet in a way that it can rotate freely (for example, hang it from a thread), one of its ends will point north. If you know which end that is (you may want to mark it), west is 90 degrees to the left of north.
When a bar magnet is suspended freely, it will align itself with the Earth's magnetic field. The north pole of the magnet will point towards the Earth's magnetic north, while the south pole will point towards the magnetic south. This alignment occurs due to the magnetic forces acting on the magnet, allowing it to rotate until it reaches a stable equilibrium position.
A compass, because the magnet's North pole will rotate until it points to the Earth's North pole.
by keeping another magnet or attractive force
To make an electromagnet rotate, you can place it in the proximity of a permanent magnet. When a current flows through the electromagnet, it interacts with the magnetic field of the permanent magnet, causing the electromagnet to rotate. This setup can be used in devices like electric motors and generators.
When the magnet is free to rotate and its poles are in a horizontal plane, it comes to rest with its poles pointing roughly north and south.
You can hang the magnet up on a string, so that it can rotate freely. In that case, it should align with the Earth's magnetic field.
A suspended magnet is usually a magnet suspended by a thin thread and allowed to rotate and swing freely. This will align itself to the Earth's magnetic field providing there is no other magnetic or electromagnetic influnence.
by burning the fuel to heat water to make steam to turn a turbine to rotate a magnet about a coil (or a coil about a magnet) to make electricity.
Just get a fairly strong magnet, I used a cow magnet. Wrap the magnet in a cloth so as not to scratch the face of the panel. Place the magnet over the needle and rotate it counter clockwise. If the magnet is strong enough the needle will return to its proper position.
An ordinary bar magnet does not rotate and align itself with the Earth's magnetic field when placed on a table because it is not freely suspended. For a magnet to align with a magnetic field, it needs to be able to rotate freely, allowing its magnetic poles to respond to the external field. When placed on a stable surface like a table, friction and support prevent it from moving, thus inhibiting the alignment with the magnetic field.
I really don't know. :D
I assume you mean an electric car. As an electric motor uses magnets or magnetism to rotate
The bar magnet rotates instead of oscillates because the magnetic forces acting on it cause it to align with the magnetic field, leading to a rotational motion rather than a back-and-forth oscillation.