Physics, 27.05.2020 17:58, reecedstceklein
A uniform stationary ladder of length L = 4.5 m and mass M = 11 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.49. The ladder makes an angle θ = 54° with respect to the floor. A painter of mass 8M stands on the ladder a distance d from its base.
a. Find an expression for the magnitude of the normal force N exerted by the floor on the ladder.
b. Find an expression for the magnitude of the normal force NW exerted by the wall on the ladder.
c. Find an expression for the largest value of dmax for which the ladder does not slip.
d. What is the largest value for d, in centimeters, such that the ladder will not slip? Assume that ladder is 4.5 m long, the coefficient of friction is 0.59, the ladder is at an angle of 43.5°, and the ladder has a mass of 55 kg.
Answers: 1
Physics, 22.06.2019 17:00, WorkingButNotReally
If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction
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Physics, 22.06.2019 18:30, kalithekittenqueen
Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton
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A uniform stationary ladder of length L = 4.5 m and mass M = 11 kg leans against a smooth vertical w...
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