is the sound of oscillation made by pendulum is heard
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the swing of a pendulum isn't grater than the 20 times in 1 second ). that's why we can't hear the sound of pendulum oscillation. ... Humans can hear only sound of those material whose frequency is 20Hz to 20000Hz. If the frequency of the body is less or greater than this human ears are unable to perceive sound.
sudipto9:
hii
the sound annot be heard
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