A) 0.25 cm
B) 2 cm
C) 4 cm
D) 2.5 cm
Correct Answer: D
Solution :
The particle is moving in circular path From the figure, \[mg=R\sin \theta \] ?(i) \[\ \frac{m{{v}^{2}}}{r}=R\cos \theta \] ?(ii) From equation (i) and (ii) we get \[\tan \theta =\frac{rg}{{{v}^{2}}}\]but \[\tan \theta =\frac{r}{h}\] \\[h=\frac{{{v}^{2}}}{g}=\frac{{{(0.5)}^{2}}}{10}=0.025m=2.5\,cm\]You need to login to perform this action.
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