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“Let it rip!” Anyone who plays with beyblades knows what this means. Any time all three of my boys are together, you can hear their beyblades battling after they “rip” them from their beyblade launchers. Even my two year old knows to shout “Let it rip!” My husband has even joined into the fun, and bought his own beyblade. But when he went to the store, he realized there were 4 different types of beyblades. My sons already had two types of beyblades, so my husband bought the other two types, just so we could figure out if there really was anything difference between the 4 types of beyblades. What we found was pretty cool!

After my husband’s trip to the store, we found out there are four types of beyblades:

Attack – this type of beyblade “attacks” or hits its opponent more than other types of beyblades.

Stamina – these types of beyblades will out-spin other types of beyblades.

Defense – These Beyblades specialize in knocking back attacks. They are slower and heavier than the other beyblade designs, resulting in the opposing beyblade being deflected.

Balance – this type of beyblade is a mix of the other three beyblade designs.

Beyblades are all made of three parts. We started our investigation by comparing the three beyblade parts:

• Energy LayerTM : The top part of the beyblade. It is made out of plastic, probably made by a process called injection molding, where a mold is made, then plastic is injected into the mold. As a mentioned in a previous post, injection molding is a way many plastic toys are made, and is a three step process.
• Forge DiscTM: The middle part of the beyblade. This piece is heavier than the top, and is made of some sort of metal. It is likely this piece is also made using the injection molding process.
• Performance TipTM: The bottom part of the beyblade. The tip is the point the beyblade spins on.

### Beyblade Science Experiment – Comparing Weights

For our beyblade science experiment, we decided to compare the weights of each part of the beyblade.

Supplies:

Procedure:

Step 1: Starting with the attack beyblade, measure the weight of the beyblade’s Energy LayerTM on the digital scale, and record the weight in Table 1 below, or download Table 1 here.

 Table 1: Beyblade Parts Weights Type of Beyblade Beyblade Parts Weight (oz) Attack Energy LayerTM Forge DiscTM Performance TipTM Stamina Energy LayerTM Forge DiscTM Performance TipTM Defense Energy LayerTM Forge DiscTM Performance TipTM Balance Energy LayerTM Forge DiscTM Performance TipTM

Step 2: Repeat step 1 for the attack beyblade’s Forge DiscTM and Performance TipTM.

Step 3: Repeat steps 1 and 2 for the other types of beyblades (Stamina, Defense, and Balance).

 Type of Beyblade Beyblade Part Weight (oz) Attack Energy LayerTM 0.30 Forge DiscTM 0.70 Performance TipTM 0.20 Stamina Energy LayerTM 0.30 Forge DiscTM 0.90 Performance TipTM 0.20 Defense Energy LayerTM 0.30 Forge DiscTM 0.70 Performance TipTM 0.20 Balance Energy LayerTM 0.30 Forge DiscTM 0.80 Performance TipTM 0.20

### 3 Engineering Activities!

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Results:

When we look at the different weights of all the beyblade parts, we notice that the Energy Layers and Performance Tips all weight the same. The difference in weight is all in the Forge Discs.

The heaviest Forge Disc is the one for the Stamina beyblade toy. Stamina means the ability for something to keep doing something for a long time. In physics terms, having stamina means the items has a lot of momentum.

So what makes something have momentum? Weight!

The equation for momentum is a circle (or angular momentum), L is:

$L=rmv$
where r=radius of the item in motion
m=mass (or weight without gravity)
v=velocity (or speed) of the item in motion

So if the radius and velocity of the beyblades are approximately the same, then the beyblade with the greatest angular momentum is the one that weighs the most! So it makes sense to name the heaviest beyblade “Stamina type”. If the stamina type beyblade is the heaviest, it will have the greatest angular momentum, and will stay in motion the longest!

### Another Science Experiment idea with Beyblades!

Test out our theory! See if the Stamina Beyblade has the greatest momentum! Time how long it takes for each type of beyblade takes to stop. It should take the stamina beyblade longer to stop, since it has the greatest momentum.

You must have the exact same conditions when you time each beyblade, so use one of these stadiums for your experiment!