FORCES IN FLUIDS

PRESSURE IN FLUIDS

• Fluid Pressure depends on depth
• Greater the depth, the greater the pressure
• Fluids include liquids and gases: they take the shape of their containers and will flow
• Fluids flow from high pressure to low pressure area
• Formula: pressure = force divided by area

DENSITY AND BUOYANCY

• Density is the ratio of mass to volume in a given substance
• Formula: Density = Mass over Volume
• Sinking: an object will sink if it is more dense than the fluid if it is in OR of it has greater weight than the buoyant force
• Floating: an object will float if it is less dense than the fluid it is in OR is equal to the buoyant force

ARCHIMEDE'S PRINCIPLE

• Displace: to take the place of
• Principle: buoyant force on an object in a fluid is an upward force equal to the weight of the fluid it displaces