ALL NUMBERS ALREADY IN (WITH THE FUNNY MARKS AFTER) ARE CORRECT, IT IS ONLY THE

Question

ALL NUMBERS ALREADY IN (WITH THE FUNNY MARKS AFTER) ARE CORRECT, IT IS ONLY THE ONES WITH BLANK SPACES

1) How much work was done on the real system?
W = joules

2) What is the change in energy of the real system?
?(Ktot + U) = joules

3) What is (Ktot + U)final for the real system?
(Ktot + U)final = joules

4) What is the final speed of the center of mass of the real system?
vcm,final = m/s

5) What is the final vibrational energy of the real system (spring potential energy plus kinetic energy relative to the center of mass)?
(U + Krel)final = joules

Explanation / Answer

To find the final location of the center of mass of the real system you need to look at x1 and x3, since those are the final locations of your two blocks. All you have to do is find the midpoint of these two locations since the blocks are identical.
(You are actually doing the same thing you did to find the initial location.)

Final location of the center of mass

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