In this experiment, a brown rubber weighs 42.2 grams and was spun at a velocity of 4.66m/s with a radius of 40cm and masses of 200g...the answer should be about 1.96N and I got 2.3.
Can someone confirm or deny this?
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I got the same answer as you, $$ F={mv^2\over r}=(42.2/1000)\times(4.66)^2/(40/100)=2.29{\rm Nm} $$
Suzu Hirose
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Hey thanks for that, so the masses at the bottom - they don't count for anything in calculations? – exponential112 Dec 13 '14 at 12:56
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If it's supposed to be in equilibrium the mass on the bottom times $g$ should equal the above. – Suzu Hirose Dec 13 '14 at 12:57
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Oh ok I see thank you :) most helpful. – exponential112 Dec 13 '14 at 13:00