February 19, 2017

Homework Help: trigonometry

Posted by karl on Thursday, August 7, 2014 at 6:03am.

A box of 200kN is placed on a smooth inclined plane 28° with the horizontal. To prevent the box from sliding down the plane, a rope is tied to it and fastened to a peg on the top of the incline as shown. Determine the pull on the string assuming that the rope is held parallel to the plane. (Hint: the pull in the string must be equal to the component of the weight of the box parallel to the palne)

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