Lab 7.docx - Hookeu2019s Law Lab Chloe Willard Background...

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Hooke’s Law Lab Chloe Willard Background Hooke’s law states that for a relatively small deformation of an object, the distance stretched is directly proportional to the force or load. Under these conditions the object returns to their original shape or size when the force or load is removed. Springs have this property so; springs are used in Hooker’s law experiments. Formula for calculating the force due to spring is given by, Spring force = spring constant x distance stretched. In notations: Spring force = K x d Where K = Spring constant in N/cm when spring force is in Newton (N) and distance d is in centimeter ( cm) Spring constant K is measure of stiffness of spring. The value of K determines how strong the spring is? Large value of K means spring is very stiff and strong. In this experiment we will find the value of spring constant K by calculating the slope of the line of spring force vs distance stretched graph. Spring force on a stationary hanging object is equal to the weight of the object because from Newton’s first law when object is at rest or stationary, net force acts on that object is zero and the object is in equilibrium. Formulas to use in calculations 1) Weight in N = mass in kilogram x 9.8m/s^2 [W = mg] 2) Spring force in N = Weight in N Procedure Go to the following web site: