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Which skier would you rather be?
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There are three scales.
The one on the right (navy shirt) indicates a 10 N force to the right ... +10 N.
The one on the left (green shirt) indicates a 10 N force to the left ... -10 N.
What will the scale in the middle read?
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A series of identical blocks.
A series of identical rectangular blocks is stacked out at their
balancing points from the top down. You can show with a simple center of mass calculation the total "stick-out" distance; that is, the horizontal distance from the back of the bottom block to the back of the top block is
\( \dfrac{1}{2}(1 + \dfrac{1}{2} +\dfrac{1}{3} +\dfrac{1}{4} + ... ) \)
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From our recent group True-False quiz:
Two of these had correct response rates of 90%, the other two 60%. Which are which?