1. Science - Year 3/4A Autumn 1 Investigation PowerPoint
Forces and Magnets
Magnetic Fun and Games
Session 2
Investigation PowerPoint
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2. We are experimenting with different designs and materials for our new range of pull along vehicles for young children.
We would like you to investigate whether the weight of the toy has any effect on how much force is needed to pull it along.

3. Force can be measured using a force meter (also called a Newton meter) which works a bit like a weighing scale. You can measure the force needed to pull something by reading from the scale. Usually there are 2 scales, one marked g which measures grams and the other N for Newtons which is a measure of force.

4. Here is another way to measure how much force is needed to pull something
A chain of 3 thin rubber bands has been stuck to the front of a tub with sticky tape. A ruler has been lined up with the front of the tub.
Insert a pencil into the front band and gently pull it along until the tub starts to move. Measure the amount of
force needed by reading how many cm the band chain had stretched before it began to move.

5. You could use either of these methods to compare the amount of force needed to pull light, medium and heavy loads

6. Please could you help us by investigating how a change in the weight of something, affects the amount of force needed to pull it.
It would be helpful for our toy designers to see your results displayed as a graph
Thank you for your help!