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April 1, 2015

April 1, 2015

Posted by **bec** on Sunday, November 6, 2011 at 9:49pm.

- physics -
**Henry**, Tuesday, November 8, 2011 at 5:35pmSince all of the books are on the table, the 1st book doesn't have to be

lifted:

d =d1 + d2 + d3 + d4 + d5 + d6,

d = 0 + 1*3.6 + 2*3.6 + 3*3.6 + 4*3.6

+ 5*3.6,

d = 0 + 3.6 + 7.2 + 10.8 + 14.4 + 18.

W = F(0 + 3.6 + 7.2 + 10.8 + 14.4 + 18)

W = F * 54cm,

W = 28 * 0.54m = 15.12 Joules.

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