First slide

Introduction to oscillations

Question

An oscillating simple pendulum is arranged in a vacuum jar, then

Easy

A

it stops oscillating
B

it continues to oscillate
C

it oscillates with slightly more time period
D

it oscillates with slightly less time period

Solution

No air resistance in vacuum
$w = \sqrt{\frac{k}{m} - {[\frac{b}{2 m}]}^{2}} w = a n g u l a r f r e q u e n c y k = p r o p o g a t i o n c o n s \tan t m = m a s s o f o s c i l l a t o r b = d a m p i n g f a c t o r o f m e d i u m i n w h i c h o s c i l l a t o r i s$
here b=0 hence oscillator continues to oscillate

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