Recent content by StonedPhysicist

any more ideas?

Here is the data: where the paper types are what m1 is being dragged over, and 30,40 and 50g corresponds to mass m2.

i agree, but the formula and my data do not seem to suggest this, my question is why

no, the acceleration does increase with increasing m2, but so does the kinetic friction coefficient. My understanding is that the kinetic friction should be independent of m2 and thus independent of the acceleration but this does not seem to be the case.

the only other variables are m2 and of course the acceleration, but using the data i have for the acceleration which was found using a camera and tracking software, i still find an increasing coefficient of kinetic friction with increasing m2

Homework Statement I have solved the problem where one mass m1 is on a horizontal frictional table connected to a mass m2 which is hanging off the table by a string over a pulley (assuming pulley massless), assuming that m2 is greater than m1 there is a net acceleration causing the mass 2 to...

ah I see now! thankyou!

i am just rearranging (m+M)gh=1/2 mv2

using v=√((2(m+M)gh)/m) , where m=0.05 kg M=10kg g=9.81 and h = 0.3...m i get 34m/s?

I am pretty sure i did this method, and ended up with a result of 34m/s, not sure that method can work for some reason

Hey guys apparently the answer to this is 491 m/s, but i keep getting 34m/s by using a method whereby i find out the height reached by the block then using kinetic energy to potential energy... doesn't seem to work tho! Please help! A 50.0 g bullet is fired into a stationary 10.0 kg block...

could it be a doppler effect?

I don't see how this will give them different energies though?

Here is the question, I was able to complete part a and b but c has beaten me! A pi meson has rest mass 131 MeVc-2 and total energy 1.000 GeV a) What is its momentum, expressed in MeVc-1 For this I obtained 991 MeVc-1 using the equation E2=c2p2+M2c4 b) By how much is its speed less than...

yes thankyou! finally i got the answer that the velocity of the muon is 66 m/s less than c (in the rest frame)! woo!