Lever challenge

Challenge 2: Lift the stack of books.

WALT made observations about effort and load.

Instructions:

1. Try moving the stack of books with your little finger.
1. What simple machine do you need to move the books with one finger?a lever
2. Why?because it has a fulcrum which is the block and it has a incline plane which is the stick and there is a load which is the stack of books.
2. Use the simple machine to lift the books with one finger.
1. Where did you place the parts of the simple machine?The fulcrum near the book
3. Change the system around and try again.
1. What do you notice?If the fulcrum is closer to the the books the book are easier to lift.
2. What is easier?The book getting lift up.

4. Conclusion: What is the trade-off? (What do you need to do to move a heavy object with little effort?)You have to put the fulcrum near the heavy object

Use this table to record your observations.

Changes in the simple machine	Difficulty to move the stack.
long stick	Easy
medium stick	Little bit hard but still managed to lift it.
short stick	Hard because I had to put all my energy to it.

Task:

• Make an A4 poster / infographic about this challenge’s simple machine. Information it must have is:
• what the machine is used for
• how to make work easier
• what the trade off is

This is our Lever challenge. We had to find out how it can make work easier and what it's mainly used for. I learnt how to use a lever properly.