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August 28, 2015

Homework Help: calculus

Posted by nate on Monday, November 14, 2011 at 2:44pm.

The force F (in Newtons) required to move a box of mass m kg in motion by pulling on an attached rope is F(x) = f m g/(cos(x))+ f (sin(x))

where x is the angle between the rope and the horizontal, f is the coefficient of static friction and g = 9.8 m/s^2. Find the angle x that minimizes the required force F, assuming f = .4

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