Solution of task 20.3.9 from the collection of Kepe OE

Solution of task 20.3.9 from the collection of Kepe OE

20.3.9
Determine the generalized force corresponding to the generalized coordinate φ at the time when the angle of deviation of the pendulum is φ = 30 °, if its length is l = 1 m, the mass of the bodies is m1 = 10 kg, m2 = 1 kg, angle α = 15 °. (Answer -4.91)