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Which of the following quantities is/are always non-negative in a simple harmonic motion along a straight line?A. `vec(F).vec(a)`B. `vec(v).vec(r)`C. `vec(a).vec(r)`D. `vec(F).vec(r)` |
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Answer» Correct Answer - A `vec(F).vec(a)=mvec(a).vec(a)` [ it is always non-negative] |
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