Air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium. the atmosphere exerts a pressure of 14.7 lbf/in2 on top of the 6-in-diameter piston. the absolute pressure of the air inside the cylinder is 16 lbf/in2. the local acceleration of gravity is g= 32.2 ft/s2. determine (a) the mass of the piston, in lb, and (b) the gage pressure of the air in the cylinder, in psig

Question

08-09-2017
Physics

contestada

Air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium. the atmosphere exerts a pressure of 14.7 lbf/in2 on top of the 6-in-diameter piston. the absolute pressure of the air inside the cylinder is 16 lbf/in2. the local acceleration of gravity is g= 32.2 ft/s2. determine (a) the mass of the piston, in lb, and (b) the gage pressure of the air in the cylinder, in psig

Respuesta :

Otras preguntas

Radiation _____. occurs is solids occurs in liquids requires physical contact between molecules is the method of heat transfer used by the sun

a weakness of the British plan to move its forces from the southern colonies to the Caribbean was that:

Why does Jackson admit that secession may be a “revolutionary act” but not a “constitutional right”?

How can natural selection account for the long snout of an anteater ?

The Articles of Confederation were criticized for being weak, particularly because Congress was denied the power to collect taxes, regulate interstate commerce,

What are 3 equivalent fractions for 1.7, 0.05, 2.3, 0.15, and 0.625

Hi, I'm French and I learn your language. Can you tell me if my text is understandable for you and if you do not see spelling errors. Thank you. Hello every bod

a plane flying due east at 395 km/h, is hit by wind blowing at 55 km/h toward the west. what is the resultant velocity of the plane?

The area of a dollar bill is 15.86 square inches. The length of a dollar bill is 2.6 inches long. What is the width of a dollar bill?

how much would you go up or down if the road stayed at 8% for one mile?

Аноним Аноним · Answer 1 · 2017-09-18T16:59:10+02:00

Refer to the diagram shown.

p₁ = 14.7 psia,atmospheric pressure
p₂ = 16 psia, absolute pressure in the cylinder

The weight of the piston is
W = mg
where m = mass of the piston.
g = 32.2 ft/s² = 386.4 in/s²

The area of the piston is
A = (π/4)*(6 in)² = 28.273 in²

Part a:
For equilibrium,
(p₂ - p₁)A = W
(16 - 14.7)*(28.273) = (386.4)*(m)
m = 0.095 lb

Answer: m = 0.095 lb

Part b:
The gage pressure in the cylinder is
p₂ - p₁ = 16 - 14.7 = 1.3 lb/in²

Answer: 1.3 lb/in²