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A block (M1) of 2.0 kg lying on an incline plane is connected to an equal mass (M2) by a massless cord passing over a pully, as shown below. If the coefficient of friction between M1 and the plane is 0.15; (a) determine the acceleration of M1 and M2 and (b) What minimum value of the coefficient of friction will keep the system from acceleration? 4. 30°
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