If you experienced these lab questions, please help me out answer these question

Question

If you experienced these lab questions, please help me out answer these questions. You can answer as much as you can. I appreciate your help.

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?

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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