An airport escalator is designed to move 40 people, 75 kg each, upward at a constant speed of 0.6 m/s at 45o slope. Determine the minimum power input needed to drive this escalator. Neglect friction and drag. Please give your answer in kW.

Q: A block and sphere are connected by a cord that passes over a pulley as shown. Neglect friction and…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: The thrust generated by a single jet engine a for s F=59000n. It take the plane (with a mass of…

A: Given: m = 6300 kg k = 100000 N/m F = 59000 N s = 0.95 km

Q: Sam, whose mass is 68 kg , straps on his skis and starts down a 68 m -high, 20∘ frictionless slope.…

A:

Q: A horizontal cylinder of air with length 1 ft and cross-sectional area 2 ft2 is accelerated by a…

A: Solution: Given Data: L=1 ftA=2 ft2Patm=14.7 psiF=4.234 lbρ=2.38×10-3 lbm/ft3   To Find: The…

Q: A 10-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of…

A:

Q: The escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm…

A: Speed, v =0.6 m/s  Length, l=250 mm  Mass, m = 150 kg Number of steps, n  Height, h = 125 mm The…

Q: A 1500-kg automobile traveling along a straight, level road increases its speed from 54 km/h to 90…

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Q: 40 m/s You're enjoying a day at the beach when you spot a sailboat, weighing 500 kg, with a 100 kg…

A:

Q: In the figure here, a box of Cheerios (mass mc = 1.90 kg) and a box of Wheaties (mass mw = 3.10 kg)…

A: According to the given data mC=1.90kg mw=3.10kg fc=2.10N fw=4.90N F=12.5N We need to find  Force on…

Q: How much energy (in MJ) does it take to lift a person and their luggage (800 lb total weight) to a…

A: Given : M = 800 lb = 362.874 kg H = 70000 feet = 21336 m V = 200 mph = 89.408 m/s To find : Amount…

Q: A drum is made to revolve about its centre by a falling mass as shown. Calculate the velocity of the…

A: Given:- M=12kg r=0.2m R=0.4m For drum; M=15kg k=0.3 h=10m To find: Velocity, V Angular velocity, ω…

Q: A rock is thrown off a cliff with an angle of 50 degrees above the horizontal with an initial speed…

A: Given: u=30.0 m/sθ=50°h=93.6 m

Q: A jet engine on an airplane moving at 950 km/hr has an exit area of 0.5 m². If gas exiting the…

A:

Q: A block of mass 2.40 kg is placed against a horizontal spring of constant k = 825 N/m and pushed so…

A: According to the data provided in te question k=825N/m x=0.075m m=2.40kg We need to find (a) Elastic…

Q: A train has a weight of 100 tons (2,000lbf) is stopped from 4 mph in 1 ft by a hydraulic cushion.If…

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Q: An engineer designing a light aircraft is trying to make an estimate of the diameter of the…

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Q: A hiker throws a stone from the upper edge of a vertical cliff. The stone's initial velocity is 25.0…

A: Given Data: The initial velocity of the stone u= 25 ms Stone is thrown at an angle θ=40°with the…

Q: Prob6 conveyor belt discharges gravel into a barge as shown at a rate of 40 m³/min. If the gravel…

A: Given: Lets us consider the given data, The specific weight of gravel,γ=18860 Nm3 Conveyor belt…

Q: A fire helicopter carries a 650-kg bucket of water at the end of a 20.0-m long cable. Flying back…

A: Givenm=650kgL=20mV=40m/sθ=38o

Q: A car traveling at 26.0 m/s hits a bridge abutment. A passenger in the car, who has a mass of 54.0…

A:

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.