Question

Which of the following is an example of a pulley?

clock gears
wheelbarrow
door knob
flagpole

Answer 1

Answer:

Door knob

Explanation:

When the knob on one side of the door is turned, the shaft retracts the spring-loaded latch that holds the door closed. Without the knob in place, more force would be needed to turn the shaft and retract the latch.

Answer 2

That is the correct answer