A uniform stationary ladder of length L = 2.7 m and mass M = 14 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 = 0.39. The ladder makes an angle θ = 55∘ with respect to the floor. A painter of mass 8M stands on the ladder a distance d from its base.(a) Find the magnitude of the normal force N, in newtons, 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) What is the largest distance up the ladder (d) max, in meters, that the painter can stand without the ladder slipping?
Answers: 1
Physics, 22.06.2019 19:30, QueenNerdy889
Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).
Answers: 3
Physics, 23.06.2019 00:50, kinderc9330
Based on details in the riddle of the rosetta stone, which statement best describes jean-baptiste fourier’s influence on jean-françois champollion?
Answers: 2
A uniform stationary ladder of length L = 2.7 m and mass M = 14 kg leans against a smooth vertical w...
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