The hypothesis is that a cable-stayed bridge will support more mass than a similar built suspension bridge.

You will build two bridges, a suspension bridge and a cable-stayed bridge, and attach a basket to the middle of the bridges with a harness to support the mass. You will then fill the basket with weights one at a time until the bridge breaks.

You will need 4 balsa wood strips, 4 wood dowels, glue for models, lightweight twine, fishing string, and small weights.

The results showed that the cable-stayed bridges held more mass than the suspension bridges. One suspension bridge broke immediately after one of the vertical suspension strings snapped. The first cable-stayed bridge never broke with the full mass on it.

This science project is interesting because it tests two different types of bridges to see which one can hold the most weight.

Variations to consider include testing different materials for the bridges, such as metal or plastic, or testing different lengths of bridges.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!