Problem and Solution of Simple Pendulum | Oscillation | 11th Class Physics

A ball of mass 10 g is tied to a string 100 cm long. Next, the ball is deflected 9°, then released. The ball performs simple harmonic motion. The question is
a. what is the angular frequency?
b. what is the vibration frequency?
c. what is the period of the vibration?
d. the displacement equation?
e. the ball displacement after 0.2 seconds?


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