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Rotational Dynamics — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsRotational Dynamics2 Marks
Question
A body, tied to a string, performs circular motion in a vertical plane such that the tension in the string is zero at the highest point. What is the angular speed of the body at the
1. highest position
2. lowest position ?
✓

Answer

1. $\sqrt{g / r}$
2. $\sqrt{5 g / r}$ in the usual notation.

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