1)Suppose you used the same balance to find the masses of m and M. Further suppo

Question

1)Suppose you used the same balance to find the masses of m and M. Further suppose that this balance was miscalibrated and all the masses you measured were actually 10% larger than your measurement. How would your calculated values for g have been affected?

2) What if the track had been considerable off level? How much energy would have lost to work against gravity as M traveled a distance h down the track when the track slanted uphill at some angle theta? By how much would v2f be reduced ? (note : You do not have to put any numbers into the equations).

3) Can you say that you have"proved" the work energy theorem to be true? Why or why not?

I would REALLYY appreciate help on this. Thanks!!

Explanation / Answer

3) We have an equation of motion as     v^2 - u^2 = 2 a s Multiply bothsides with (1/2)m, then we get      (1/2)m v^2 -  (1/2)m u^2 =  (1/2)m(2 a s) Final kinetic energy - initial kinetic energy = mas = Fs So the change in kinetic energy = work done by the force Which gives the statement of the work energy theorm. PLEASE POST THE QUESTIONS SEPARATELY. THANq

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