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13. mmh A solid concrete block weighs 169 N
and is resting on the ground. Its dimensions are 0.400 m x 0.200 m x 0.100 m.
A number of identical blocks are stacked on top of this one. What is the
smallest number of whole blocks (including the one on the ground) that can be
stacked so that their weight creates a pressure of at least two atmospheres
on the ground beneath the first block? |
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Solve for N |
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To create greatest pressure
want smallest area so choose the two smallest sides from the three, so use
the 0.200 m x 0.100 m area |
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