Question

For a simple pendulum, the graph between $T^2$ and $L$ is

• A. a straight line passing through the origin
• B. parabola
• C. circle
• D. ellipse
• E. hyperbola

Answer 1

Answer: (A)

$T=2\pi \sqrt{\frac{L}{g}}$
Or $T\propto \sqrt{L}$
or $T^2\propto L$
It is linear relation between $T^2$ and $l$ hence the graph between $T^2$ and L is a straight line passing through the origin.