- #1
StasKO
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Homework Statement
this is an experiment from lab..
i have pendulum - mass (iron) hanging from a massless cord.
under the mass there is a magnet.
the movement of the pendulum is in a small angle.
i repeat the experiment 5 times - each time in a different distance between the iron mass and the magnet (the magnet is on a jack that can change its height).
the motion is recorded to the computer (multilab software)
the goal: to find from the time period (as recorded in the computer) the magnet's force as a function of the distance between the magnet and the iron mass
Homework Equations
T = 2[itex]\pi[/itex][itex]\sqrt{\frac{l}{g}}[/itex]
this equation is for there is only mg present..
im not sure how to add the magnetic force..
The Attempt at a Solution
im really stuck..
ive made a force diagram with the magnetic force.. since its small angles i assumed the magnetic force is straight down (just like mg).. i also got rid of the sine [itex]\theta[/itex] from the same reason..
im not sure how to use the distance between the magnet and iron mass as a variable..
any help is appreciated
thank you