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BIOMEC-Chapter 10-15
BIOMEC- Chapter 10-15
| Word | Definition |
|---|---|
| kinematics | the form, pattern, or sequencing of movement with respect to time |
| linear displacement | change in location |
| linear velocity | the rate of change in location displacement/time |
| acceleration | the rate of change in linear velocity change in velocity/time |
| relative angle | angle at a joint formed between the longitudinal axes of adjacent body segments |
| absolute angle | angular orientation of a body segment with respect to a fixed line of reference |
| angular displacement | change in angular position |
| angular velocity | the rate of change in angular position angular displacement/time |
| angular acceleration | the rate of change in angular velocity change in angular velocity/time |
| law of inertia | a body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state |
| law of acceleration | a force applied to a body causes acceleration of that body |
| law of reaction | for every action there is an equal and opposite reaction |
| friction | a force acting over the area of contact between two surfaces |
| momentum | quantity of motion possessed by a body |
| principle of conservation of momentum | in the absence of external forces, the total momentum of a given system remains constant |
| impulse | the product of a force and the time interval over which the force acts |
| mechanical work | the product of a force applied against a resistance and the displacement of the resistance in the direction of the force |
| mechanical power | the rate of work production |
| mechanical energy | the capacity to do work |
| kinetic energy | energy of motion |
| torque | the rotary effect of a force about an axis of rotation |
| moment of inertia | represents resistance to angular acceleration |
| fluid | a substance that flows or continuously deforms when subjected to a shear stress |
| laminar flow | smooth, parallel layers of fluid |
| turbulent flow | mixing of adjacent fluid layers |
| Archimedes' principle | buoyant force acting on a body is equal to the weight of the fluid displaced by the body |
| floating | occurs when the buoyant force is greater than or equal to the body weight |
| drag | a force caused by the dynamic action of a fluid that acts in the direction of the freestream fluid flow |
| form drag | a pressure differential between the lead and rear sides of a body moving through a fluid |
| wave drag | the generation of waves at the interface between two different fluids such as air and water |
| lift | a force acting on a body in a fluid in a direction perpendicular to the fluid flow |
| foil | a shape capable of generating lift in a fluid |
| Bernouli principle | an expression of the inverse relationship between relative velocity and relative pressure in fluid flow |
| Magnus effect | deviation in the trajectory of a spinning object toward the direction of spin |
Created by:
afetterolf
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