Question

The tension in the string of a simple pendulum is

• A. constant
• B. maximum in the extreme position
• C. zero in the mean position
• D. None of these

Answer 1

Answer: (D)

None of these

$T=\frac{m{v}^2}{r}+mgcos\theta$

v is velocity of the bob and theta is the angle made by the string with vertical axis.

as v and $\theta$ both are variable T is also variable.

T is maximum at mean position as at mean position v is max and the angle is minimum.

Hence option D is correct