Hookes law

• Hooke's Law


  If you apply a force to a spring, the force stretches the spring, and if you don't stretch it too much, the amount of force you apply is proportional to the stretch
• If you apply twice the force


  You get twice the stretch
• If you apply three times the force

  You get three times the stretch
• Hooke's Law only applies if you keep all the bonds between the molecules of the spring together, i.e. if you don't over-stretch the spring</b>
• What happens when you over-stretch a spring

  The bonds between the molecules break, and the spring doesn't come back to its original length
• Masses are pulled down by the gravitational field strength of the earth, which is called the weight
• As the mass attached to the spring increases


  The spring stretches further
• Hooke's Law


  • The extension of an elastic object like a spring is directly proportional to the force exerted
• Real-life application of Hooke's Law

  • Trampolines - the centre of the structure is attached to multiple springs on the outside, and when people jump on it, the force they exert is directly proportional to the distance the springs stretch