
Bicycle Helmet Brands and Shock Absorption
Hard
Do expensive bicycle helmets absorb more impact than cheap ones? You place a basketball inside each helmet and pump it to the same pressure. Then you drop a 3 kg weight from 2 meters onto the helmet.
A pressure gauge on the ball records the peak impact force. You test three helmet brands at different price points. Each helmet gets five drops.
All three helmets produce similar pressure readings. Price does not appear to affect shock absorption in this test.
Hypothesis
The hypothesis is that a more expensive bicycle helmet will be more effective in reducing impact.
Method & Materials
You will arrange four bricks in a square, secure a bicycle helmet over a ball, and drop a weight from a certain height. You will measure the air pressure in the ball when the weight hits the helmet.
You will need a 2 meter long string, three different brands of bicycle helmets, a 3 kg circular weight, a basketball, an air pump, a pressure gauge, four bricks, a chair, and an assistant.
Results
The results showed that the impact of the collision was approximately the same for the basketball, regardless of the brand of bicycle helmet used.
Why do this project?
This science project is interesting because it tests the ability of different brands of bicycle helmets to absorb shock. It also shows how important it is to wear a helmet correctly to minimize the risk of injuries.
Also Consider
Try repeating the experiment with different heights and heavier weights. Also, repeat the experiment with different brands and models of helmet.
Full project details
Additional information and source material for this project are available below.Related videos
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