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Science - Chapter 11
Forces in Fluid
Question | Answer |
---|---|
Pressure | a force that is exerted over an area on the surface of an object |
Pressure Formula | Force / Area |
Pascal | a unit of pressure; N/m^2=Pa |
Fluid | a material that can flow easily |
Buoyant Force | acts in the direction opposite to the force of gravity.... because of this it makes an object feel lighter |
Archimedes' Principle | the buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces |
Density | a substance is its mass per unit volume; mass / Volume |
Pascal's Principle | when force is applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid |
Hydraulic System | multiples force by applying the force to a small surface area |
Bernoulli's Principle | the speed of a moving fluid increases the pressure with the fluid decreases |
lift | an upward force |