Question
![*109. D The central ideas in this problem are reviewed in Multiple-Concept
Example 9. One block rests upon a horizontal surface. A second identical
block rests upon the first one. The coefficient of static friction between the
blocks is the same as the coefficient of static friction between the lower block
and the horizontal surface. A horizontal force is applied to the upper block,
and the magnitude of the force is slowly increased. When the force reaches
47.0 N, the upper block just begins to slide. The force is then removed from
the upper block, and the blocks are returned to their original configuration.
What is the magnitude of the horizontal force that should be applied to the
lower block so that it just begins to slide out from under the upper block?](https://content.bartleby.com/qna-images/question/20ff2f77-9fd2-4c3c-adb3-db9b2838f0b7/e89e6144-37e2-4c56-9494-495fdecd9604/dnmydd.png)
Transcribed Image Text:*109. D The central ideas in this problem are reviewed in Multiple-Concept
Example 9. One block rests upon a horizontal surface. A second identical
block rests upon the first one. The coefficient of static friction between the
blocks is the same as the coefficient of static friction between the lower block
and the horizontal surface. A horizontal force is applied to the upper block,
and the magnitude of the force is slowly increased. When the force reaches
47.0 N, the upper block just begins to slide. The force is then removed from
the upper block, and the blocks are returned to their original configuration.
What is the magnitude of the horizontal force that should be applied to the
lower block so that it just begins to slide out from under the upper block?
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