A woman climbs a ladder against the side of the building and wants to climb 3/4 of the way to the end of the ladder. What is the minimum coefficient of friction needed to keep the ladder from sliding out from under her? The mass of the ladder is 10.5 kg, and its length is 7.46 m, the mass of the woman is 37.0 kg, and the ladder makes an angle of θ =57.10 do the ground as is shown here as a picture and a free body diagram. (assume no friction between the side of the building and the ladder) What would the coefficient of friction need to be if she made it all the way to the end of the ladder?

A woman climbs a ladder against the side of the building and wants to climb 3/4 of the way to the end of the ladder. What is the minimum coefficient of friction needed to keep the ladder from sliding out from under her? The mass of the ladder is 10.5 kg, and its length is 7.46 m, the mass of the woman is 37.0 kg, and the ladder makes an angle of θ =57.10 do the ground as is shown here as a picture and a free body diagram. (assume no friction between the side of the building and the ladder) What would the coefficient of friction need to be if she made it all the way to the end of the ladder?

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 31PQ: A wooden door 2.1 m high and 0.90 m wide is hung by two hinges 1.8 m apart. The lower hinge is 15 cm...

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A wooden door 2.1 m high and 0.90 m wide is hung by two hinges 1.8 m apart. The lower hinge is 15 cm above the bottom of the door. The center of mass of the door is at its geometric center, and the weight of the door is 260 N, which is supported equally by both hinges. Find the horizontal force exerted by each hinge on the door.
A uniform ladder rests against a smooth wall so that it makes an angle of 60° with the ground. The ladder is 10.0 m long and weighs 150 N. How far can a 250 N child go before the ladder slips? The coefficient of friction between the ladder and the ground is 0.4.
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