Mini-Quiz: Lever is a Simple Machine

1. What are the main parts of a lever?

   A catapult or pair of pliersSorry, not correct. Try another button. A solid board and a fulcrum or pivot pointThat is correct. You know about levers. A fulcrum, an applied force, and a load.Good try, but not right. Select another answer.

2. What determines the class of a lever?

   Where the load and effort are with respect to the fulcrumCorrect. You are doing great! How much effort is required to lift the loadOops! Wrong answer. Re-read the question and try again. Whether the arms are long, medium or short in lengthSorry, not correct. Try another button.

3. What is a common use for a lever?

   To increase force, distance, and speed at the same timeOops! Wrong answer. Re-read the question and try again. To measure frictionGood try, but not right. Select another answer. To lift a heavy loadThat is correct. You know about levers.

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