An 7.0 m, 240 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0 angle with the ground. How far up the ladder can an 860 N person climb before the ladder begins to slip? Note: a few of you will encounter an odd bug in this problem. The random numbers WebAssign generates for you may say the person can climb, say, 11.5m up a ladder that's only 11m long. If that happens, just input 11.5m as your answer and the system should accept it.