FORCES IN FLUIDS

PRESSURE IN FLUIDS

• Fluid pressure depends on depth
• Greater the depth, the greater the pressure
• Fluids include liquids & gases: they take the shape of their containers and will flow
• Fluids flow from high pressure to low pressure areas
• P = f/a Pressure = force/area

DENSITY & BOUYANCY

• Density is the ratio of ,ass to volume in a given substance
• D = m/v. Density = mass/volume
• Sinking: an object will sink if it is more dense than the fluid it is in OR if it has greater weight than 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 PRINCIBLE

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