An escalator carries 20 passengers of average mass of 60 kg. It travels 4.2 m in height in 1 minute each floor. What is the minimum power for the escalator to lift these passengers from the first floor to the third floor? (Take g = m / s^2)
1 Answer
Jun 28, 2018
P= 840 W
Explanation:
The question is quite confuse
however, the work you done is like the potential energy that the system gains:
i suppose
Power is the work divided the time that it takes
if you go from the firt floor to the third foor, it increases the work, but also the time increases and the Power is the same