9Th Class Physics New Book Chapter 4 || Lecture 3 || Equilibrium and Conditions

Описание: This is the new book of class 9 physics published by pctb or punjab curriculum and textbook board lahore for all punjab boards and chapter 4 is about turning effect of forces and this video includes topics like, like and unlike parallel forces, addition of forces, turning effect of a force, moment of force or torque and couple, resolution of forces and law of moments and centre of gravity and equilibrium and conditions of equilibrium.
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