lightgrav said:the magnet speed is essentially constant here, at 1 m/s .
(avg. accel = 1.2 m/s^2)
What do you mean by Ft ?
Lenz's Law is a principle in electromagnetism that states that the direction of an induced current in a conductor will always be such that it opposes the change that produced it.
In this lab, a magnet is dropped into a copper tube, and the resulting movement of the magnet creates an electric current in the tube. This current creates a magnetic field that opposes the movement of the magnet, in accordance with Lenz's Law.
The strength of the induced current is affected by the speed of the magnet's movement, the strength of the magnet, and the length and thickness of the copper tube.
The induced current can be calculated using Faraday's Law, which states that the magnitude of the induced current is equal to the rate of change of magnetic flux through the copper tube. This can be calculated using the formula V = -NΔΦ/Δt, where V is the induced voltage, N is the number of turns in the coil, ΔΦ is the change in magnetic flux, and Δt is the change in time.
Lenz's Law is used in many applications, including generators, transformers, and electric motors. It is also used in braking systems for trains and roller coasters, where the movement of a conductor through a magnetic field creates resistance and slows down the movement. Lenz's Law is also used in eddy current testing, a non-destructive testing method used to detect flaws or defects in metal objects.