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Define the term work. Show that work done is equal to thedot product of force and displacement vectors. |
Answer» <p>Work is said to be done whenever there is a transfer of energy. Mathematically, it is the dot product of force and displacement.</p><p>Suppose we have two line AB and CD and θis the angle between them. The component of AB long CD is given by ABcos θ. This is what we get when we do dot product. A force can do some work only when it has a component along the direction of the displacement. Hence, we take dot product of the force and displacement to find work done.</p> | |