23.2.8 The decision of the collection (Reshebnik) Kepe

23.2.8 The decision of the collection (Reshebnik) Kepe

23.2.8. Determine initial mass m in the missile at the time of turning off its engine speed is 1200 m / s, and weight - 800 kg. The relative velocity of the particles separating vr = 900 m / s. The initial velocity is zero. The forces of gravity and the resistance of the medium is not taken into account. (3.04)

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(DYNAMICS, Chapter 23 - Dynamics of a point of variable mass, paragraph - 23.2: Tsiolkovsky rocket equation) 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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