Three Boxes
Sunday, February 28th, 2010
Three boxes are resting on a surface, as shown. A 795 N force acts on them. Calculate the acceleration for:?
Three boxes are resting on a surface, as shown.
A 795 N force acts on them. Calculate:
a) the acceleration of the system if mu = 0,
b) the acceleration of the system if mu = 0.30.
Diagram:
http://img.photobucket.com/albums/v98/krnboy/1.jpg
Let a be the acceleration.
(a)
795 = (25 + 55 + 15)a
a = 795 / 95 = 8.37 m/s^2.
(b)
795 – 0.3 * 95 * 9.81 = 95a
a = (795 – 0.3 * 95 * 9.81) / 95
= 5.43 m/s^2.
St. Sebastian – “Three Boxes” Destroy All Records
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