Ladder Problem 1
1
Determine the distance S to which the 90-kg painter can climb without causing the 4-m ladder to slip at its lower end a. The top of the 15-kg ladder has a smaller roller, and at the ground the coefficient of static friction is 0.25. The mass centre of the painter is directly above his feet. [Ans. S = 2.55 m] Free Body Diagram Solution:
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Determine the distance S to which the 90-kg painter can climb without
causing the 4-m ladder to slip at its lower end a. The top of the 15-kg ladder
has a smaller roller, and at the ground the coefficient of static friction is
0.25. The mass centre of the painter is directly above his feet.
[Ans. S = 2.55 m]
Free Body Diagram
Solution:
NS
Sticky Note
From similar Triangle