Find expressions for the acceleration and speed of a platform moving under the action of a constant horizontal force F (figure), if there is sand on the platform, which pours out through a hole in the platform. In 1 s, a mass dm of sand is poured out, at the moment t = 0, the speed of the platform v is equal to zero, and the mass of the sand and the platform together is equal to M.
Short solution. Format gif
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