The mechanical system consists of the weights 1 and 2 (the coefficient of friction of the cargo plane f = 0.1), the homogeneous solid cylindrical roller 3 and the stepped pulleys 4 and 5 with steps radii R4 = 0.3 m, r4 = 0.1 m, R5 = 0.2m, r5 = 0.1m (weight of each pulley assumed to be uniformly distributed along its outer rim) (Fig. 1.7, Tab. 1.7). Body of interconnected yarns wound on the pulleys; Lots of threads are parallel to the planes. Under the force of F = f (s), depending on the displacement force application point, the system is set in motion from standstill. When the system moves on pulleys 4 and 5, a constant torque resistance equal respectively M4 and M5.
Determine the value of the required quantity at the time when the displacement of the point of application of force F is equal to s1. Seeking the value specified in the "Find" table, where indicated: v1- speed cargo 1, vc3 - the speed of the center of gravity roller 3, 4 angular velocity of the body 4, etc.
Solution of the problem