Friday
April 25, 2014

Homework Help: Complex Physics Problem

Posted by Devin on Saturday, June 29, 2013 at 2:08pm.

A ladder can fall for two reasons. If it is set too steep and climber gets their mass to the left of the ladder's base, the ladder likely will fall over backwards. If the ladder is set at too shallow of an angle the required force of friction between the ladder and the ground might be too great and the base of the ladder will slip. Assume that there is no friction between the ladder and the wall and that the ladder is effectively weightless. The coefficient of friction between the base of the ladder and ground is 0.29. The person using the ladder will be 3/4 of the way up the ladder. If the person climbing the ladder has a weight of 980 newtons and the ladder is 3.97 meters long, how far from the wall can the base of the ladder be placed, to the nearest hundredth of a meter, and not slip?

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