Задача id12674

A long block of mass M1 lies on a smooth horizontal surface. A cannon of mass M2 stands on a block. A cannon fires a projectile of mass m in the horizontal direction, flying out at a speed v relative to the ground. The gun, having experienced recoil, travels a certain distance along the block, then, under the influence of friction forces, it stops moving relative to the block. Determine the amount of mechanical energy Q converted into heat due to frictional forces between the gun and the block.

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