Name Lever Test Redo
Teacher
Class Pd.
Date
1. Define FLUCRUM -
Draw a picture of each lever type, labeling the fulcrum
2. A NEWTON is …
3. Label the picture with the appropriate symbols for fulcrum, effort, and load.
Which lever class does this object belong to? ______
4. In a class – 2 lever, the effort required to lift a load is ALWAYS ______than or ______to the weight of the load. Using the picture, show (label) where the load would seem to “weigh less” and where the load would seem to be equal to the effort.
5. What does FLE-123 mean?
Label each of the levers with the appropriate lever class number. Draw a picture of each if you need to.
Wheelbarrow – / Garlic press - / Fishing rod – / Your arm -Ice tongs – / LAX stick - / rake - / Hammer - pulling out nails -
Circle the vertical pair of objects that are of the same lever class.
6. Draw a picture of you lifting your teacher with one hand using the lever board. Where did the fulcrum need to be in order for you to do this?
Why is that?
10. What are the labels at the top of the scale indicating? On the left? ______on the right? ______
When we read something from the scale, do we read from the top of the silver line or from the bottom?
11.
12. The paint can shown is being opened by a screwdriver which is a type of lever. Label the load, effort, and fulcrum. Use arrows to show the FORCES at work.
13/14. Circle the picture that correctly shows how the seesaws would look when they stop moving. The “children” are the same weight.Explain the reason behind your choice.
15. Use the graph below to complete the missing information on the chart below.
Cm of effort from the fulcrum / Amount of Newtons needed to lift22 cm
17 cm
5.5 N
2.1 N
When the effort is positioned farther from the fulcrum, the amount of effort needed to lift the load is _____.
The more Newtons that are needed to lift the load, the ______the effort is to the ______.
19. The 3 classes of levers are alike because… .
The 3 classes of levers are different because … (What is the memory device we used to help us to remember the 3 classes of levers? What does that mean?)
Provide 2 examples of levers found in each class.
Class - 1 / Class - 2 / Class- 320. Explain how you would load a 50-kg boulder into a truck using a lever.