Question

calculate the horse power of the motor og an elevator , which can carry 10 persons of average mass 60kg through a vertical height of 20m in30s.​

Answer 1

Answer:

Potential energy =mgh=or workdone

m is 600kg

h is 20m

g is -9.8m/s^2 (negative because the direction is

negative)

powerower/t=600×20×-9.8J/30

-3920J/s or watt

1hp=746w therefore in 3930w

nHp=3930/746 =5.27hp.