These three mentions the Pressure of the Air
compressor.These actually are the units of Pressure in
various metric standards such as MKS, BTU and SI.
1. psi---pounds per square inch.
2. cfm--- dont know. help me
3. bar---1 bar= 1 kg/cm2. Unit of Pressure.

psi and bar is the units for pressures,
1bar = 14.503psi
psi---pounds per square inch.
bar---1 bar= 1 kg/cm2.
mention capacity of the compressor is in cfm
cfm - cubic feet per minute

psi and bar is the units for pressures,
1bar = 14.503psi
psi---pounds per square inch.
bar---1 bar= 10^5 pascals
= 100000 N/m2
= (100000* 10kg)/(10^4 cm2)
= 100 kg/cm2

psi and bar is the units for pressures,
1bar = 14.503psi
psi---pounds per square inch.
bar---1 bar= 1 kg/cm2.
mention capacity of the compressor is in cfm
cfm - cubic feet per minute

If we put a ball(made by metal) of dia 10mm on table of
size 200 mm*200 mm . weight of ball is 10 kg(98.1N) it
should point conact with table than what is the stress
acting on table and why?