- #1
9vswt
- 6
- 0
Homework Statement
A ladder,10 m long and having a mass of 25 kg, rests on a rough horizontal floor and is supported by a rough vertical wall. The ladder is inclined at 60 degrees as shown and starts to slip when a person having a mass of 75 kg has climbed halfway up it. The coefficient of static friction at the wall is 0.2. Assume the weight of the ladder to be concentrated at its midpoint. Calculate the coefficient of static friction at the floor.
Homework Equations
The Attempt at a Solution
I've been stuck at this question for 3 days and I am still unable to find the coefficient of static friction at the floor. I have drawn the free body diagram and tried to solve it, getting a static friction of 0.3. Please tell me what is wrong with my workings, I don't want to ponder over such this question any longer.(sorry for my terrible handwriting)