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A block (mass mA) lying on a fixed frictionless inclined plane is connected to a mass mB by a cord passing over a pulley, as shown in Fig. 4–54. (a) Determine a formula for the acceleration of the system in terms of mA, mB, θ, and g. (b) What conditions apply to masses mA and mB for the acceleration to be in one direction (say, mA down the plane), or in the opposite direction? Ignore the mass of the cord and pulley.
FIGURE 4-54 Problem 67 and 68.
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