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2 cards from this section. Quick, good the night before a test.
What is Stokes’ Law?
Think about forces acting in opposite directions.
What is terminal velocity?
Consider when acceleration stops.
What does Stokes’ Law relate to?
Think about what the law is mathematically describing.
True or False: Terminal velocity is reached when the net force acting on an object is zero.
Consider the forces acting together on the object.
A basketball of radius 12 cm falls through a substance with a viscosity of 10 kg/(m.s). Calculate its terminal velocity, given that the density of the basketball is 0.6 kg/m³ and the density of the substance is 1.2 kg/m³.
Substitute the values correctly and pay attention to unit conversions.
A sphere falls through a viscous liquid at a velocity of 2 m/s. If the density of the sphere is 3000 kg/m³ and the density of the liquid is 1000 kg/m³, calculate how changing the radius of the sphere to half affects the terminal velocity.
Focus on how radius affects the outcome in the terminal velocity formula.
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