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September 20, 2014

Homework Help: spring- physics

Posted by Cerra on Thursday, October 28, 2010 at 8:24pm.

A 2.0-kg box rests on a plank that is inclined at an angle of 65 degrees above the horizontal. The upper end of the box is attached to a spring with a force constant of 400 N/m. If the coefficient of static friction between the box and the plank is 0.22, what is the maximum amount the spring can be stretched and the box remain at rest?

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