Consider a metal ring kept on a horizontal plane. A bar magnet is held above the ring with its length along the axis of the ring. If the magnet is dropped freely, the acceleration of the falling magnet is:
By BYJU'S Exam Prep
Updated on: September 13th, 2023
(g is the acceleration due to gravity)
- More than g
- Equal to g
- Less than g
- Depending on the mass of magnet
We know that
The acceleration which is gained by an object due to gravitational force is the acceleration due to gravity. SI unit is m/s2.
It has both magnitude and direction and is a vector quantity.
Acceleration due to gravity is represented by g and the standard value on the surface of the earth at sea level is 9.8 m/s2.
The magnetic flux which is linked with the ring increases as the magnet falls.
From Lenz’s law, the induced current in the ring will oppose the motion of the falling magnet i.e. the magnet will face retardation
So the magnet will fall with acceleration that is less than g i.e. a < g
The direction of the current will be anti-clockwise in the ring as observed above the ring
Therefore, the acceleration of the falling magnet is less than g.
Summary:
Consider a metal ring kept on a horizontal plane. A bar magnet is held above the ring with its length along the axis of the ring. If the magnet is dropped freely, the acceleration of the falling magnet is:
Consider a metal ring kept on a horizontal plane. A bar magnet is held above the ring with its length along the axis of the ring. If the magnet is dropped freely, the acceleration of the falling magnet is less than g.
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