An elevator has a mass of 340 Kg and is rated to carry up to 10passengers. It is attached to a steel rope, (actually five ropes)which goes over a circular drum in the equipment room on the roof,and back down behind the elevator to a weight ( a counterweight)mounted on similar sliding poles as the elevator. Assuming thepassengers on average have a mass of 75Kg, what is the maximumtension on the rope when the elevator is stationary and loaded tocapacity?
The circular drum is provided with a reversible electric motor andan electrically operated brake system to move the elevator betweenfloors. What is the optimum mass of the counterweight to minimizethe average work done in winding the elevator, sometimes empty,sometimes fully loaded, between floors?
What then would be the minimum horsepower of the motor needed towind a fully loaded elevator from the subasement to the fourthfloor Theory Institute in 25 seconds? (Assume that it is 6 floorsof three meters height per floor). ( one horsepower is 746watts
any insight on how to start or solve this problem would be veryhelpful
An elevator has a mass of 340 Kg and is rated to carry up to 10passengers. It is attached to a steel rope, (actually five ropes)which goes over a circular drum in the equipment room on the roof,and back down behind the elevator to a weight ( a counterweight)mounted on similar sliding poles as the elevator. Assuming thepassengers on average have a mass of 75Kg, what is the maximumtension on the rope when the elevator is stationary and loaded tocapacity?
The circular drum is provided with a reversible electric motor andan electrically operated brake system to move the elevator betweenfloors. What is the optimum mass of the counterweight to minimizethe average work done in winding the elevator, sometimes empty,sometimes fully loaded, between floors?
What then would be the minimum horsepower of the motor needed towind a fully loaded elevator from the subasement to the fourthfloor Theory Institute in 25 seconds? (Assume that it is 6 floorsof three meters height per floor). ( one horsepower is 746watts
any insight on how to start or solve this problem would be veryhelpful
