We can use this fact to calibrate the spring which means that we determine how much force is required for a unit length change of the spring. Now if you double the applied force the displacement of the spring will double. The spring extends by an amount (note that the amount is different for every spring). So if you pull on a spring you apply a force. Simply stated, Hooke’s law describes that the force applied when deforming something is proportional to the size of the deformation. The Newton spring balance measures force through applying the principle of a law known as Hooke’s law. Hi Emma, my video on the spring balance has unfortunately been put on hold while I develop my video for Newton’s third law.
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