|A comparison of PheT and OSP gravity lab|
Thanks PhET!Thanks to PhET refreshed version, it gave me the chance and reason to revisit my own basic gravity lab to refresh and do a check on the calculation.
OSP@SG has already implemented this feature as a norm at the design stage as I only want students to notice the forces of gravity independent of size of radius of masses. Thanks to PhET design, i refreshed my gravity lab to be more optimised for the small student personal devices, Android is of course fully supported in full screen mode. check it out here.
orientation and fullscreen
small calculation differenceI quickly check if the calculations are correct as both simulations gives the same result! The slight difference from PheT's version could be due to truncation.
See the images of the case M1=50 kg, M2=200 kg and r= 4 m.
assuming G = 6.67408 x 10-11
F1 = F2 = Gm1m2/r^2 = 4.171255x10-8 N
Which simulation do you prefer?Let me know what you think by posting your comments below!
Enjoy playing with both simulations!
some of my earlier pictures
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