MCQ
The points of maximum and minimum attraction in the curve between potential energy $(U)$ and distance $(r)$ of a diatomic molecules are respectively


- A$S$ and $R$
- B$T$ and $S$
- C$R$ and $S$
- ✓$S$ and $T$

$F = - \frac{{dU}}{{dx}}$
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$\vec r = - \cos \,t\hat i + \sin \,t\hat j - 18\,t\hat k$
then what is the magnitude of its acceleration ?