Solution of task 5.3.1 from the collection of Kepe OE

If the total amount of your purchases from the seller Михаил_Перович more than:
- 200 $ the discount is 15%
- 100 $ the discount is 10%
- 50 $ the discount is 7%
- 20 $ the discount is 5%
- 10 $ the discount is 3%
- 5 $ the discount is 2%
- 1 $ the discount is 1%

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5.3.1
Determine the modulus of the principal moment of the system of forces relative to the center O if its projections are known on the axis of the Cartesian coordinate system: Mx = -20 Nm, Mu = 12 Nm, and Mz = 0. (Answer 23.3)