Sound travels faster through rigid material like steel rather than through spongy materials like rubber. Why?

1 answer:

3 0

<span>since sound travels using mechanical waves and needs a material medium to propagate and since mechanical waves spread through vibrations ...and since hard materials have their atoms packed closely....they need to vibrate with a smaller amplitude to pass on the wave....thus sound travels faster in a denser medium than a less dense one.</span>

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Answer:

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Explanation:

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$L$ = length of the meter stick = 1 m

$m$ = mass of the meter stick

$w$ = angular speed of the meter stick as it hits the floor

$v$ = speed of the other end of the stick

we know that, linear speed and angular speed are related as

$v = r w\\w = \frac{v}{r}$

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$I = \frac{mL^{2} }{3}$

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Rotational kinetic energy of the stick = gravitational potential energy

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