Question

Two things aluminum sheets are suspended as shown in figure a jet of air is blown into the space between them,what will happen?
A. The sheets will come closer to each other
B.the sheets will move apart
C.there will be no effect
D.the sheets will be raised up​

Answer 1

If air is blown between the two sheets the sheet will move apart.

Option B

Explanation:

• this is because there will be certain amount of force which will be exerted due to the moving air. Due to the kinetic energy of the molecules of the air there will be force which will be applied to the aluminium sheet.

• Now if the aluminium sheet is very light then the force will be sufficient to move the aluminium to a certain extent. This is due to the the change in the pressure and the amount and the force by which the air is blown

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Answer 2

Given that,

Two things aluminum sheets are suspended and a jet of air is blown into the space between them.

We know that,

According to bernoulli principle,

Fast moving air exerts lower pressure on aluminum sheet than static air.

Air is flown between the sheets, air on the farther sides is static.

So pressure between the sheets is lower than the pressure on the farther sides of sheets,

When a jet air is blown into the space between the aluminum sheets then the sheets will come closer to each other due to low pressure.

Hence, The sheets will come closer to each other.

(A) is correct option.