18.1.9. Ball 1 rolls on the smooth surface of the fixed cylinder, and the ball 2 moves between two fixed cylindrical surfaces. Specify the number of balls, which is superimposed on hold.

Right after the payment you will receive a link to a zip archive with the solution of the problem 18.1.9
(DYNAMICS, Chapter 18 - The principle of D'Alembert, paragraph - 18.1: Communications and equations) 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.
Task completed in word format (handwritten or typed solution in Word) or in manuscript form in gif / jpg format ..
After receipt of the decision would be very grateful if you leave a positive review.