Gravity – Balance a Pop Can

Gravity – Balance a Pop Can

More Science Experiments

You Wouldn't Want to Live Without Gravity

Gravity is the force that pulls objects toward the center of the Earth. An object’s center of gravity is the average location of the weight of the object.

If you have a wooden ruler you can balance it on your finger at the 6 inch mark. The ruler has a uniform shape and it’s weight is evenly distributed along its shape. It is easy to determine that the 6 inch mark, right in the middle, is the center of gravity for the ruler. There is an equal amount of weight on each side of the 6 inch mark; the gravitational pull on both sides of the rule is equal – so the ruler will balance.

If you have an object like a person trying to balance on a balance beam, then it is a little trickier to figure out where the center of gravity is located. It will be a little different for each gymnast depending on how their weight is distributed on their body. Each gymnast learns the location of their own center of gravity and knows to keep that point centered over the balance beam. If that point is not centered, the gymnast will fall off.srpbalancecan

In today’s experiments you will find the center of gravity for objects that are not as easy as a ruler, you will find the center of gravity for a pop can and a fork.

What You Need:

  • an Empty Soda Can

Here is a video that will show you exactly what to do to balance a pop can:

 

I tried the pop can and it really did work. It only took a couple tries too. It is a little harder


Websites, Activities, Printables & Databases:

Science in Context: Polymer and Non-Newtonian Fluid is a database you can use in any IndyPL Library Branch or at home. Login using your IndyPL library card number. The Science in Context database will show you articles, images and videos to help you learn about solutions and crystals.​

 

 

You can also ask a math and science expert for homework help by calling the Ask Rose Homework Hotline. They provide FREE math and science homework help to Indiana students in grades 6-12.

 


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