Task 00081.

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A box is pulled along a wooden gangway forming an angle a with the horizon. Coefficient of friction of the box on the gangway. At what angle to the horizon should the rope be directed in order to pull the box with the least effort with a given acceleration a?

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.

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