Interaction between objects
Newton(SI)
Dynes(CGS)
unit of pressure is pascal
instrument used to mesure is barometer
aplications
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syringe
drinking with straw
rubber sucker
Can change direction
can change speed
Can stop a moving body
can change shape of body
Contact
Muscular force
frictional force
Non contact
electrostatic
magnetic
gravitational
As height of liquid increases , pressure decreases
As depth increases , pressure increases