A Level Physics Circular Motion Experiment

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[ryankatnoria]

Little bit confused- I thought that you could investigate F= mv^2/r by rearranging the equation to v^2 = F/m × r where v^2 = y axis, F/m is gradient and r is x axis. Keep mass of bung constant, swing bung around and time 10 full rotations and calculate V using the appropate equations. Vary r (length) of string attached to bung to vary V, repeat to calculate multiple data points and plot v^2 against r which allows you to calculate F using the gradient. Am I wrong?

[WatchContent-zpum]

How would you calculate the mass of the rubber stopper? Let's assume the mass at the bottom is also given. Does mass at the bottom = the mass of the rubber stopper? Because mg = Ft = mv^2/r and re-arranging should give us the same mass right?

[Tanveer]

Is the tension providing the centripetal force?

[ayoadeneye]

Hello thank you for the video, whats the purpose of the cylinder please? Is it to reduce friction or the string or something else?

[asukaayukawa]

how do you make sure that you are spinning it with the same amount of force each trial?

[gv]

is it also possible to state that the y axis should be time period, and the x axis being 1/m?