Pressure a vertical piston cylinder device contains a gas at an unknown pressure. if the outside pressure is 100 kpa, determine (a) the pressure of the gas if the piston has an area of 0.2 m2 and a mass of 20kg. assume g = 9.81 m/s2. (b) what-if scenario: what would the pressure be if the orientation of the device were changed and it were now upside down

Explanation:

When Cylinder is vertical Let gas pressure inside is and atmospheric Pressure be

Area of Piston

mass of Piston

from FBD

(b)If cylinder is upside down

From FBD

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

car stops. he keeps going = he has inertia