2 Hooke’s LawThe force exerted on an object (F) is proportional to the amount of stretch or compression (x) and the spring constant (k)F = Newtonsx = metersk = N/m
3 Hooke’s LawHooke’s Law mainly applies to elastic objects like springs and rubber bandsWe will mainly focus on springsAll elastic objects obey Hooke’s Law until they reach their ELASTIC LIMIT and become deformed
4 EXAMPLESA spring with a spring constant of 10 newtons per meter is stretched 0.5 meters. How much force is applied to the spring?A spring with a spring constant of 15 newtons per meter is compressed with a force of 4.5 newtons. How far will the spring compress?
5 EXAMPLESA spring is stretched a distance of 0.4 meters with a force of 20 newtons. Calculate the spring constant of the spring.
6 SUMMARY Which objects does Hooke’s Law apply to? Equation? Which letter represents the spring constant?Units for the spring constant?Which kind of force acts on a spring if something is hung on the spring?