What is free body diagram ?
Answer:- A diagram of a chosen system in which we represent all the forces acting on it and thus calculate the net force is called free body diagram.
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What is latus rectum of parabola ?
Answer:- A Focal chord which is perpendicular to the axis of the parabola is called latus rectum.
What is periodic motion ?
Answer:- A motion which repeat itself after a regular interval of time is called periodic motion. Osicallatory motion is a special case of periodic motion in which the particle move to & fro. And SHM is the special case of Oscillatory motion in which the particle move same displacement in either side of the mean position.