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Is there any body which is at rest but not in equilibrium? There are two conditions for a body to be in equilibrium: (i) Sum of forces acting on body= 0 (ii) Resultant torque = 0 If a body is in...
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How to draw frequency polygon for class intervals having unequal size? For example how to draw frequency polygon for the following data: Classes: 0–39 40–49 50–79 80–99...
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