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The 5 kg sleeve is held in place in position A of Figure 4 (which is in a plane vertical), and is attached to a spring (k = 500 N/m, free length = 0.5 m). The sleeve can slide without friction on the rod from A to C, but with friction (μk = 0,1) from C to F. The result is a total of small thrust in A (consider the zero speed there) and the sleeve continues its course all the way to F, where he turns back.
a) Calculate the speed in B.
b) Calculate the distance D.
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