14-59. The escalator steps move with a constant speed of0.6 m/s. If the steps are 125 mm high and 250 mm in length,determine the power of a motor needed to lift an averagemass of 150 kg per step. There are 32 steps.*14-60. If the escalator in Prob. 14–46 is not moving,determine the constant speed at which a man having amass of 80 kg must walk up the steps to generate 100 W ofpower-the same amount that is needed to power astandard light bulb.250 mm -125 mmv = 0.6 m/s4 m

(14.59) Given data v=0.32 m/sh=125 mml=250 mmm=150 kgn=32

Answered: 14-59. The escalator steps move with a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Determine the power that must be supplied to the motor when t = 2 s. Express your answer in units of horsepower to three significant figures.
Determine the output for a motor necessary to lift 250 Ib at a constant rate of 10 ft/s. The efficiency of the motor is ε= 0.68
Task 2 The package has a weight of 30 N and slides down the chute. When it reaches the curved portion AB, it is traveling at 2.4 m / s. If the chute is smooth, determine the speed of the package when it reaches the intermediate point C when 0 = 12° and when it reaches the horizontal plane. Also, find the normal force on the package at C. radius = 6 m 450 eMechanica.com -2.4 m/s
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