Force with pressure

Classical Mechanics Level 3

A plane sound wave $p=p_{o}cos(\omega t-kx)$ passing through a medium. A small cube of side $'a'$ is fixed at a point inside medium having four sides parallel to direction of wave propagation. The net force acting on the cube due to pressure variation is directly proportional to

sin^{2}(\omega t-kx)

None

sin(\omega t-kx)

cos^{2}(\omega t-kx)

cos(\omega t-kx)

1 solution

Tanishq Varshney
May 21, 2015

$dF=dP(A)$ , $A$ is area

$\huge{dF=a^{2}dx\frac{dP}{dx}}$

$F \quad \alpha\quad sin(\omega t-kx)$

Very simple ....., atleast don't deserve level-4

Nishu sharma - 6 years ago

i posted it as a level 2 problem, how level 4???

Tanishq Varshney - 6 years ago

I have edited the level to 2. As some people would solve it the level would appear on the problem.

Sudeep Salgia - 6 years ago

Zoom it

Nishu sharma - 6 years ago

Force with pressure

1 solution

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