Mini-Quiz: Increasing Output Speed with a Lever

1. What type of levers can increase the speed of the load?

   Class 1 and Class 2Good try, but not right. Select another answer. Class 2 and Class 3Sorry, not correct. Try another button. Class 1 and Class 3That is correct. You know your levers.

2. How does the load arm length compare with the effort arm length for increasing load speed?

   Load arm length is longer than effort arm lengthCorrect. You understand simple machines! Load arm length is shorter than effort arm lengthOops! Wrong answer. Re-read the question and try again. Load arm length always equals effort arm lengthSorry, not correct. Try another button.

3. What is the load speed if the effort speed is 20 m/s, the load arm length is 2 m, and the effort arm length is 1 m?

   4 m/sOops! Wrong answer. Re-read the question and try again. 20 m/sGood try, but not right. Select another answer. 40 m/sThat is correct. You know your levers.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.