Question

a) Using a simple labeled diagram, explain the terms effective length and amplitude of a simple pendulum.​

Answer 1

Explaination of the following terms:

$\underline{\rm{1) \: Effective \: length \: of \: Pendulum}}$

Effective length of a pendulum refers to the the distance between the point of suspension of the bob and the centre of mass of the bob.

Time period is dependent on effective length as :

$\boxed{\sf{T = 2\pi \sqrt{\dfrac{l}{g}}}}$

Here l refers to the effective length of the pendulum.

$\underline{\rm{2) \: Amplitude \: of \: Pendulum}}$

Amplitude of a pendulum refers to the maximum displacement of the bob from its mean position.

A pendulum follows Simple Harmonic Motion and hence has an amplitude following a sinusoidal motion.

$\boxed{\sf{x = A\sin(\omega t + \phi)}}$

Here, A refers to Amplitude.

Answer 2

$\huge{\mathbb{\red{ANSWER}}}$

pendulum is a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position

$\huge{\mathbb{\red{Thanks}}}$