What acceleration should a person with a mass of m = 70 kg walk along a long board with a mass of M = 5 kg lying on an inclined plane with an angle at the base of 10 ° so that the board glides uniformly downwards? The coefficient of friction between the board and the surface of the plane is 0.3.

Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
If you have any questions about the decision, write. I will try to help. File in image format.