IOM 2016, Блиц — Задача 49

Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.

Условие

The answer should be given in SI-units and rounded to the nearest integer, unless otherwise is stated. $g = 10$ m/s$^2$.

A rectangular slab $A$ of mass $m = 2.0$ kg lies on a horizontal table and a slab $B$ of mass $M = 5.0\ kg$ lies on top of it. The coefficient of friction between slabs and the slabs and the table is $\mu = 0.2$, $g = 10 m \cdot s^{-2}$. Determine a friction force between the slabs if a constant horizontal force $F = 14$ N is exerted on the slab $B$.

Решение

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Оригинал в Архива: blitz.pdf