Engineering

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We selected three rulers made from three different materials:

metal

wood

plastic

We tested the flexibility of these three materials by tying 50g and 100g weights onto each ruler to see how much each weight would cause them to bend! 

The majority of the class guessed the plastic ruler would be the most flexible material and we were right! The 50g weight bent the plastic ruler down 0.5cm and the 100g weight bent the plastic ruler down 1cm

The weights made no impact on the metal and wooden rulers showing us that wood and metal aren’t as flexible as plastic 

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