17.1.5. Material point of mass m = 12 kg is suspended from two identical springs. On it a force F = 20 N. Determine unit effort in a spring, if this provision is a material point acceleration a = 3 m / s2.

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(DYNAMICS, Chapter 17 - paragraph - 17.1: kinetochtatiki method for a material point) 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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