Solution of task 14.1.15 from the collection of Kepe OE

Solution of task 14.1.15 from the collection of Kepe OE

14.1.15
Crank 1 of length OA = 0.25 m, rotating uniformly with angular velocity? = 10 rad / s, moves the link 2, the mass of which is m = 5 kg. Determine the modulus of the principal vector of external forces acting on the link at the time when the angle? = 60 °. (Response 62.5)