Term
|
Definition
|
|
Term
|
Definition
| A unit of work measured in Newton-Meters |
|
|
Term
|
Definition
| a = V2 squared - V1 squared; all over 2d |
|
|
Term
| Equation of Kinetic Energy |
|
Definition
|
|
Term
| Equation for the Work-energy Principle |
|
Definition
Wnet = .5(m)(v2)^2 - .5(m)(v1)^2 Wnet = KE2 - KE1 Wnet = change of KE |
|
|
Term
Equation for the Gravitation of Potential Energy |
|
Definition
|
|
Term
| Equation for the elastic potential energy |
|
Definition
|
|
Term
|
Definition
| v1 = square root of (2KE1/m) |
|
|
Term
|
Definition
| E = KE + PE = .5mv2 + mgy |
|
|
Term
|
Definition
| the product of the magnitude of the displacement times the component of the force parallel to the displacement |
|
|
Term
| Definition of Kinetic Energy |
|
Definition
| The energy of motion from the Greek word "kinetikos" meaning motion |
|
|
Term
| Definition of work-energy principle |
|
Definition
| the net work done on an object is equal to the change in its kinetic energy |
|
|
Term
| Definition of potential energy |
|
Definition
| the energy associated with forces that depend on the position or configuration of a body (or bodies) and the surroundings |
|
|
Term
| Definition of gravitational potential energy |
|
Definition
| the rpduct of its weight mf and its height y above some reference level |
|
|
Term
| Definition of "restoring forces," Hooke's Law, spring equation |
|
Definition
| the spring exerts its force in the direction opposite the displacement (hence the minus sign), acting to return it to its nomal length |
|
|
Term
Definition of Conservative forces |
|
Definition
| forces such as gravity, for which the work done does not depend on the path taken but only on the initial and final positions. |
|
|
Term
| Example for nonconservative forces |
|
Definition
| ex.: friction, air resistance, tension in cord, motor, rocket propulsion, push or pull by person |
|
|
Term
| definition of total mechanical energy |
|
Definition
| the sum of the kinetic and potential energies at any moment |
|
|
Term
| definition of the principle of conservation of mechanical energy |
|
Definition
| if only conservative forces are acting, the total mechanical energy of a system neither increases nor decreases in any process it stays constant it is conserved |
|
|
Term
| definition of the law of conservation of energy |
|
Definition
| the total energy is neither increase nor decreased in any process. Energy can be transformed from one form to another, and transferred from one body to another, but the total amount remains constant. |
|
|
Term
| Definition of Dissipative forces |
|
Definition
| frictional forces reduce the total mechanical energy |
|
|
Term
| Definition of thermal energy |
|
Definition
| heat is considered as energy |
|
|
Term
|
Definition
| the rate at which work is done OR as the rate at which energy is transformed |
|
|
Term
|
Definition
| in SI units, power is measured in joules per seconds |
|
|
Term
|
Definition
one horsepower is defined as 550 ft*lb/s which equals 746 W |
|
|
Term
|
Definition
| this can be defined as the ability to do work |
|
|
Term
|
Definition
it stands for the spring constant |
|
|
Term
| If the Gravitational potential energy is without WFfr what type of path is it? |
|
Definition
|
|
Term
| If the Gravitational potential energy is with WFfr what type of path is it? |
|
Definition
|
|
Term
| Mechanical energy includes what? |
|
Definition
|
|
Term
| The large Gravitational Potential Energy Equation |
|
Definition
| .5m(velocity 1 squared) + mg(y1) + .5k(x2 squared) = .5m(v2 squared) mg(y2) + .5k(x2 squared) + (Ffr)(d) |
|
|
