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2015-07-01T16:54:44+08:00

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Yes, I was able to pull the blocks of wood easily because but the other blocks of wood were also moved as pulled the blocks. There is a movement of all the blocks of wood even if I only pulled two blocks.
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2015-07-07T20:43:59+08:00
No, because of the friction between the edges of the blocks of wood.
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