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problem11_74

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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11.74: a) The center of gravity of top block can be as far out as the edge of the lower block. The center of gravity of this combination is then 4 3 L from the right edge of the upper block, so the overhang is . 4 3 L b) Take the two-block combination from part (a), and place it on the third block such that the overhang of 4 3 L is from the right edge of the third block; that is, the center of gravity of the first two blocks is above the right edge of the third block. The center of

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Unformatted text preview: mass of the three-block combination, measured from the right end of the bottom block, is 6 L-and so the largest possible overhang is . 12 11 ) 6 ( ) 4 3 ( L L L = + Similarly, placing this three-block combination with its center of gravity over the right edge of the fourth block allows an extra overhang of , 8 L for a total of . 24 25 L c) As the result of part (b) shows, with only four blocks, the overhang can be larger than the length of a single block....
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