MCQ
Let $\theta$ denote the angular displacement of a simple pendulum oscillating in a vertical plane. If the mass of the bob is m, then tension in the string is mg $\cos\theta$
- AAlways.
- BNever.
- CAt the extreme position.
- DAt the mean position.
✓
Answer
- At the extreme position
Explanation:
For simple pendulum
$\frac{\text{min}}{\text{r}}=\text{T}-\text{mg}\cos\varnothing$
But when F = I, i.e., the bob is at extreme position. its velocity is zero, hence the equation becomes: $\text{T−mg}\cosθ=0$
$\Rightarrow\text{T−mg}\cosθ=0$
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