Challenge Question 2: Sir Lancelot, who weighs 450.0 N, is assaulting a castle by climbing a uniform ladder that is 10.00 m long and weighs 105.0 N. The bottom of the ladder rests on a ledge and leans across the moat in equilibrium against a frictionless, vertical castle wall. The ladder makes an angle of 55.00° with the horizontal. Lancelot pauses one third of the way up the ladder. (a) Find the normal and friction forces on the base of the ladder. (b) Find the minimum coefficient of static friction needed to prevent slipping at the base. (c) Find the magnitude and direction of the contact force on the other edge of the ladder. Frictionless wall
Challenge Question 2: Sir Lancelot, who weighs 450.0 N, is assaulting a castle by climbing a uniform ladder that is 10.00 m long and weighs 105.0 N. The bottom of the ladder rests on a ledge and leans across the moat in equilibrium against a frictionless, vertical castle wall. The ladder makes an angle of 55.00° with the horizontal. Lancelot pauses one third of the way up the ladder. (a) Find the normal and friction forces on the base of the ladder. (b) Find the minimum coefficient of static friction needed to prevent slipping at the base. (c) Find the magnitude and direction of the contact force on the other edge of the ladder. Frictionless wall
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter14: Static Equilibrium, Elasticity, And Fracture
Section: Chapter Questions
Problem 26PQ: Consider the situation in Problem 25. Tests have shown that when people try to eyeball the proper...
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