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Mathematics 18 Online
OpenStudy (anonymous):

Two equal masses (1 and 2) are connected by the rope across a pulley and placed on the larger block A as shown on the picture. Find the minimal acceleration a of the block A along the horizontal so that masses 1 and 2 remain stationary with respect to the block A. Coefficient of kinetic friction between each of the masses and block A is 'm', rope is massless and non-stretchable.

OpenStudy (anonymous):

here's a pic of the system

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