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3 cards from this section. Quick, good the night before a test.
What is elastic potential energy?
Think of an example, like stretching a rubber band.
What is Young's Modulus?
Consider how much force is needed to stretch different materials.
What happens to the elastic potential energy when a wire is stretched?
Think about how a rubber band behaves when stretched.
True or False: Young's modulus can help determine the tensile strength of materials.
Consider what Young's modulus tells us about a material.
A copper wire of length 5 m and cross-sectional area 3 × 10^-5 m² is stretched by a 100 N force. Calculate the elastic potential energy stored in the wire if Young's modulus for copper is 110 GPa.
Make sure to calculate all steps carefully.
Discuss how the elastic potential energy concept is vital in designing suspension bridges, and calculate the work done in stretching the cables if a load of 50,000 N is applied.
Consider how forces change during use in the real world.
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