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(III) A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2 m/s2 (Fig. 5–40). Let μk = μs = μ. (a) What minimum coefficient of friction μ between the two blocks will prevent the 4.0-kg block from sliding off? (b) If μ is only half this minimum value, what is the acceleration of the 4.0-kg block with respect to the table, and (c) with respect to the 12.0-kg block? (d) What is the force that must be applied to the 12.0-kg block in (a) and in (b), assuming that the table is frictionless?
FIGURE 5–40 Problem 32.
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Physics for Scientists & Engineers, Volume 2 (Chapters 21-35)
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