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# Physics1b experiments: Simple Machines- Detailed lab experiments illustrating simple machines with accompanying worksheets

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Detailed lab experiments illustrating simple machines with accompanying worksheets

Detailed lab experiments illustrating simple machines with accompanying worksheets

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### Transcript

• 1. SIMPLE MACHINES LAB Pulley
• Materials: pencil, Simple Machines WS, Science Notebook, blinds
• Procedure
• Use the cords to release the blinds.
• Now pull up the blinds using the pulley.
• Sketch and explain the forces acting on the string/blinds.
• QUESTIONS:
• How can a pulley make lifting an object easier?
• What does it do?
• 2. SIMPLE MACHINES LAB Inclined Plane
• QUESTIONS:
• How can an inclined plane make it easier to lift up an object?
• How can the momentum of each ball be described? (Use the words mass & velocity)
• Materials: pencil, Simple Machines WS, Science Notebook, 2 small balls (different sizes), ramp (two boards)
• Procedure
• Roll the ball down the ramp.
• Roll the ball up the ramp.
• Use a different ball. Repeat.
• Sketch and explain the forces acting on the ball.
• 3. SIMPLE MACHINES LAB Screw
• Materials: pencil, Simple Machines WS, Science Notebook, screws, monkey wrench, screw drivers
• Procedure
• Find the screw on the monkey wrench. Sketch & label.
• Screw each of the screws into the wood. (Righty tighty, lefty loosey)
• QUESTIONS:
• Which screw was easiest? Hardest?
• Look at the screws. How are they different? How could this explain it?
• 4. SIMPLE MACHINES LAB Wedge Task 1
• Materials: pencil, Simple Machines WS, Science Notebook, wedge, clay, nail, pin, cloth
• Procedure
• Stick the needle in the cloth.
• Pull it out. Use the other end. Answer the question for task 1
• QUESTIONS:
• Does using the eye-end work? Which works better? Why?
• 5. SIMPLE MACHINES LAB Wedge Task 2
• Materials: pencil, Simple Machines WS, Science Notebook, wedge, clay, nail, pin, cloth
• Procedure
• Press the wedge flat side into the clay.
• Press the wedge point side into the clay. Answer the questions for Task 2.
• Roll the ball of clay back up. Press palm into clay.
• Press fingers into clay.
• Press 1 finger into clay. Answer the questions for Task 2.
• Sketch and explain the forces acting on the wedge/clay.
• QUESTIONS:
• Which is easier- flat end or pointed end? Why?
• Which is easier- palm, all fingers, 1 finger? Why?
• 6. SIMPLE MACHINES LAB Wheel & Axle Task 1
• Materials: pencil, Simple Machines WS, Science Notebook, toe car, can opener, pre-made straw/string/cup wheel & axle
• Procedure
• Rotate the wheels on the can opener. Observe. Answer questions on Task 1.
• Rotate the wheels on the toy car. Observe. Answer questions on Task 1 card.
• QUESTIONS:
• How does the can opener open a can? (There are 3 machines here.)
• Draw the wheel & axle(s) from the toy car.
• 7. SIMPLE MACHINES LAB Wheel & Axle Task 2
• Materials: pencil, Simple Machines WS, Science Notebook, toe car, can opener, pre-made straw/string/cup wheel & axle
• Procedure
• Set up: Tape the cup to the table near the edge.
• Rotate the straw to ‘wind up’ the string.
• Try lifting the items with the wheel & axle.
• QUESTIONS:
• What items could you lift with the wheel & axle?
• Sketch & explain the forces pulling up an object.
• 8. SIMPLE MACHINES LAB Potential Energy
• Materials: pencil, Simple Machines WS, Science Notebook, slinky, rubber band
• Procedure
• Think about the different forms of potential Energy & answer the following questions.
• QUESTIONS:
• What kinds of potential energy are in the following items?
• Slinky, ball at the top of a hill, fire, sun, flute playing, battery, plutonium atom, rubber band
E
• 9. SIMPLE MACHINES LAB Lever Task 1
• Materials: pencil, Simple Machines WS, Science Notebook, nails, hammer, wood
• Procedure
• Hammer the nail into the block of wood.
• Use the back of the hammer as a lever to pull the nail out of the wood. (See teacher.)
• QUESTIONS:
• Explain how you are able to take the nail out this way and not by your fingers.
• 10. SIMPLE MACHINES LAB Lever Task 2
• Materials: pencil, Simple Machines WS, Science Notebook, (items below)
• Procedure
• Point out the fulcrum on these objects:
• Scissors
• Pliers
• staple pull-outer
• Spoon/fork
• Hammer
• Large clip
• Clamp