14-59. The escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass 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 a mass of 80 kg must walk up the steps to generate 100 W of power-the same amount that is needed to power a standard light bulb. 250 mm - 125 mm v = 0.6 m/s 4 m

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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14-59. The escalator steps move with a constant speed of
0.6 m/s. If the steps are 125 mm high and 250 mm in length,
determine the power of a motor needed to lift an average
mass 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 a
mass of 80 kg must walk up the steps to generate 100 W of
power-the same amount that is needed to power a
standard light bulb.
250 mm -
125 mm
v = 0.6 m/s
4 m
Transcribed Image Text:14-59. The escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass 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 a mass of 80 kg must walk up the steps to generate 100 W of power-the same amount that is needed to power a standard light bulb. 250 mm - 125 mm v = 0.6 m/s 4 m
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