PRELIMS 2

Question 1

Both the elevator car and the counterweight ride on BLANK along the sides of the elevator shaft. The rails keep the car and counterweight from swaying back and forth, and they also work with the safety system to stop the car in an emergency.

Answer 1

guide rails

Question 2

Using up the in the elevator car (letting it descend to the ground) builds up the potential energy in the weight (the weight rises to the top of the shaft).

Answer 2

potential energy

Question 3

The lift machine is usually located BLANK the lift shaft as this allows

Answer 3

above