20.4.9 The decision of the collection (Reshebnik) Kepe

20.4.9 The decision of the collection (Reshebnik) Kepe

20.4.9. Load 2 is fixed to the shaft 1 and moves in a vertical plane. The potential energy of the pendulum P = 9.81 (1 - cosφ), the kinetic energy T = 0,8φ2. Determine kinetic potential at a time when the angle φ = 60 ° and φ = angular velocity of 1 rad / s.

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(DYNAMICS, Chapter 20 - Lagrange equation of the second kind, paragraph - 20.4: The kinetic potential) of Reshebnik to the collection of short tasks on the theoretical mechanics Kep OE, JA Viba, OP Grapis, JA Svetinysh et al. Publishing Moscow / Graduate School / 1989, 2009, 2012.
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