Fluid mechanics Flashcards
What is drag force?
Acts on a body through water.
What is air resistance?
Acts on body travelling at high velocity through the air.
What do air resistance and rage force act against?
Motion of the body:
This increases physiological demand by the body- lead to fatigue and poor performance.
What are five factors that can reduce or increase drag?
- Velocity of moving body
- Mass of athlete
- Streamlining and shape
- Surface characteristics
5.Cross-sectional area
What are five factors that can reduce or increase drag?
- Velocity of moving body
- Mass of athlete
- Streamlining and shape
- Surface characteristics
5.Cross-sectional area
How does Velocity of performer effect drag?
The greater the velocity of a body through a fluid, the greater the drag force.
How does cross sectional area affect drag?
A large cross-sectional area can increase drag
A small cross-sectional area can decrease drag.
How does streamline or shape effect drag?
A more streamline, aerodynamic shape reduces drag.
How does surface characteristics effect drag?
The smoother the syrfacae the lower the air resistance or drag.
How does surface characteristics effect drag?
The smoother the surface the lower the air resistance or drag.
How does Mass of performer effect drag?
The greater the mass the less its motion is changed by air resistance and drag.
