Dievsky V.A - Solution of problem D4 variant 27 task 2

If the total amount of your purchases from the seller Михаил_Перович more than:
- 19989 ₽ the discount is 15%
- 9994 ₽ the discount is 10%
- 4997 ₽ the discount is 7%
- 1999 ₽ the discount is 5%
- 999 ₽ the discount is 3%
- 500 ₽ the discount is 2%
- 100 ₽ the discount is 1%

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D4-27 (Task 2) Dievskiy

For the diagram shown in the figure using the Lagrange principle, determine the force F (in the presence of friction - the maximum value of this value), at which the mechanical system will be in equilibrium. Initial data: weight of the load G = 20 kN, torque M = 1 kNm, radius of the drum R2 = 0.4 m (in the double drum there is also r2 = 0.2 m), angle α = 300 and slip coefficient f = 0.5 . Unmatched blocks and skating rinks are considered weightless. Friction on the axes of the drum and blocks is neglected.