Work Energy And Power Question 275
Question: An escalator has 2400 W of power available to move passengers from the first floor of a mall to the second, 6.0 m vertically. If the average mass of the passengers is 65 kg, what is the maximum number of passengers that can be carried to the second floor in 1.0 minute?
Options:
A) 4
B) 5
C) 22
D) 37
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ Pt=nmgh $
$ 2400( 60 )=n( 65 )( 9.8 )( 6 ); n=37 $
