Inertia is a measure of how difficult it is to change an object’s state of motion.
Mass and inertia are directly related. This means that the more massive an object is, the more inertia the object has and vice-versa.
Just because I tell you that mass and inertia are directly related, you don’t have to accept this as true. Actually, you can question any research that is stated as a fact.
Design a science project with the objective to confirm how mass and inertia are related.
What affect does the mass of an object have on the object’s inertia?
So, what do you think? Never give a wild guess. Instead, try to think of an example, such as “Which has more inertia, a stationary elephant or a stationary mouse?”
1. Which would be more difficult to move, the elephant or the mouse? The Elephant.
2. Why? Because the elephant is more massive. A lot more massive. VOILA’! Now you can give your hypothesis based on this example.
But you have not proved anything until you have performed an experiment with measurable results.
In the diagram, a bucket contains objects–could be metal coins. The bucket has strings attached so that it can swing back and forth like a pendulum.
As the number of coins in the bucket increases, the mass of the bucket increases.
How do the number of coins (mass) affect how fast the bucket swings?
How does the speed of the swings relate to inertia?
2. Moving objects with more inertia are more difficult to stop.
|Janice VanCleave’s Guide to More of the Best Science Fair Projects|