Weightlifter
The Basics of Weightlifting
- Which forces help a weightlifter lift the weights?
- Which force makes the weights come back down?
- What is a pulley? What is a block and tackle? How can these help a weightlifter train?
Build the Weightlifter
- Building instructions book ‘B’, pages 68 - 86
Can you lift it?
Experiment 1:
- Test to see if the model can raise the weights.
- What did you notice?
- Record your observations on your worksheet.
- Remove one wheel from the barbell at a time. Test to see if the weightlifter can lift it.
- How many do you have to remove before the barbell can be lifted?
Yes, you can!
Experiment 2:
- Change the model to pulley position 2 and test it again.
- What was different?
- Record your observations on your worksheet.
- How much can the weightlifter lift? Add bricks from the set to find out.
What did you see?
- Which forces did you observe?
