1) Take a look at the set-up below; initially, the spring is relaxed. The static and kinetic friction coefficients are approximately the same. You start pulling with constant force F (red arrow) on the bottom block. You continue to pull - albeit very slowly- until the top block falls off the bottom block. Lim μ μ m m 0 a. In your own words, describe the motion of the green and blue blocks. What is happening? b. Draw the force and free-body diagrams for the blocks. c. How far do you have to pull the bottom block until the top block falls off? d. Until the moment when the top block tumbles off, how much work have you done on the system? e. Until the moment when the top block tumbles off, how much work has the top block done on the bottom block?
1) Take a look at the set-up below; initially, the spring is relaxed. The static and kinetic friction coefficients are approximately the same. You start pulling with constant force F (red arrow) on the bottom block. You continue to pull - albeit very slowly- until the top block falls off the bottom block. Lim μ μ m m 0 a. In your own words, describe the motion of the green and blue blocks. What is happening? b. Draw the force and free-body diagrams for the blocks. c. How far do you have to pull the bottom block until the top block falls off? d. Until the moment when the top block tumbles off, how much work have you done on the system? e. Until the moment when the top block tumbles off, how much work has the top block done on the bottom block?
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