Question

12. An aeroplane of mass 5000 kg is flying at an
altitude of 3 km. If the area of the wings is
50m² and pressure at the lower surface of
wings is 06x10 Pa, the pressure on the upper
surface of wings is (in pascal) ( g= 10 ms 2)
1) 59x1032) 2x1043) 6x103 4) 59
non uniform tube ofron​

Answer 1

Answer:

The pressure on the upper surface is $59\times10^{3}\ Pa$

(1) is correct option.

Explanation:

Given that,

Mass of aeroplane = 5000 kg

Altitude = 3 km

Area = 50 m²

Pressure on lower surface $P_{l}= 0.6\times10^{5}\ Pa$

We need to calculate the pressure on the upper surface

Using formula of pressure

$(P_{l}-P_{u})A=mg$

Put the value into the formula

$(0.6\times10^{5}-P_{u})\times50=5000\times10$

$0.6\times10^{5}-P_{u}=10^{3}$

$-P_{u}=10^{3}-60\times10^{3}$

$-P_{u}=10^{3}(1-60)\ Pa$

$P_{u}=59\times10^{3}\ Pa$

Hence, The pressure on the upper surface is $59\times10^{3}\ Pa$