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A gas is contained in a vertical, frictionless piston cylinder device. The piston has a mass of 20 kg with a cross-sectional area of 20 cm 2 and is pulled with a force of 100N. If the atmospheric pressure is 100 kPa, determine the pressure inside.

A gas is contained in a vertical, frictionless piston cylinder device. The piston has a mass of 20 kg with a cross-sectional area of 20 cm2 and is pulled with a force of 100N. If the atmospheric pressure is 100 kPa, determine the pressure inside.

Grade:8

1 Answers

Ashish Kumar
askIITians Faculty 32 Points
7 years ago
The total downward force =20g + 100000* A
The upward force = 100 + pA, where p is the pressure inside.
100 + p A = 200 +100000A, p= (100 +10 * 20)/ (20 * 10 ^-4)
p = 150000 Pa.



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