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 Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum Oct 22nd 2017, 03:58 PM #1 Junior Member   Join Date: Oct 2017 Posts: 2 Calculating period - Mass on a spring Hello all, I am writing a lab report for physics and I am wondering if my calculations are valid. I am to calculate the period of a mass on a spring and then to find out how the changing of that mass affects the period. The original formula I am meant to use is 'T = n/t', the number of vibrations (oscillations in this case) divided by the time (seconds). Something went wrong during the experiment and so now when I put my results into the above formula, I do not get any sort of correlation. So I then turned to the formula for calculating the period for a mass on a spring - 'T = 2pi * square root of m/k'. Now I thought, if I want to solve for K, I can simply take the average of the 'n' and 't' and do the following - 7.3335/3.74 = 6.28 * square root of 50/k Where 7.3335 is the average oscillations and 3.74 is the average time. Now my question is, is this allowed? The reason why I thought this was allowed was that T = n/t, so why shouldn't n/t = 2pi * square root of m/k, as they are different ways to find the same thing? Correct? or am I wrong? Thank you!   Oct 23rd 2017, 05:31 PM #2 Senior Member   Join Date: Aug 2008 Posts: 113 Looks like you are using the formula for frequency, the reciprocal of period. period = (total time for n oscillations)/n $T= \dfrac{t_{total}}{n}$   Oct 24th 2017, 01:26 AM #3 Junior Member   Join Date: Oct 2017 Posts: 2 Sorry my bad, I meant t/n. But back to the question, is it possible to make them equal to each other? Are they both the exact same thing?  Tags calculating, mass, period, spring Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Physics Forum Discussions Thread Thread Starter Forum Replies Last Post aows61 General Physics 9 Aug 30th 2017 01:54 PM Cosmophile Kinematics and Dynamics 11 Feb 6th 2016 01:10 PM viciado Advanced Mechanics 0 Dec 18th 2009 09:16 AM themanbehinditall Energy and Work 9 Oct 13th 2009 07:32 AM robp Kinematics and Dynamics 1 Feb 25th 2009 05:35 PM