Задача для РГР (1.19)
On the horizontal bar of the board is a mass m. One end of the board rises. Draw a graph of the frictional force acting on the bar, the angle α of inclination of the board in the range 0 ≤ α ≤ π / 2. The coefficient of friction between the board and the bar μ0 = 0,25.
Оплата и выдача товара осуществляются через партнёрскую платформу.