Question

Question 24
Consider a vertical piston/cylinder system. The piston has 50 g mass and a given radius of 3 cm. What is the pressure due to the piston?

Answer 1

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Answer 2

Answer:

173.3Pa

Explanation:

mass=50g, convert g to kg 50/1000= 0.05kg r= convert to cm to meter 3x10^-2,

Upper part of the piston is circle because it's the cylindrical piston so Area is of circle=πr^2

Pressure=?, Pressure=Force/Area

Force=massxacceleration acceleration due to gravity:9.8 m/s/s/

Force=0.05x9.8m/s/s/=0.49N

Area=πx(3x10^-2)^2=πx9x10^-4=28.26x10^-4

Pressure=0.49/28.26x10^-4=0.49x10^4/28.26=4900/28.26=173.3Pa