95. Determine how much time t body sliding down an incl

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95. Determine how much time t body sliding down an inclined plane along the length l = 3,1 m, will take the second half the way, if the angle of inclination α to the horizontal plane is 320, the coefficient of friction of the body of the plane f = 0,4.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)