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Question

How to calculate tension in a string

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Solution

Tension is nothing but the pulling force acting on the body when it is hanged to the objects like string, cable, chain etc. It is denoted by T (sometimes also denoted as Ft). Tension formula is given by Where W = Weight of the body, m = mass of the body,
a = acceleration of the moving body

If the body is moving upward the tension would be T = W + ma
If the body is moving downward the tension would be T = W - ma
If the tension is equal to weight of body T = W

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