Work Energy And Power Flashcards
1
Q
Work
A
F is the magnitude of the force,🔺x the magnitude of the displacement and 0 the angle between the force and the displacement
2
Q
Work energy theorem
A
The work done on an object by a net force is equal to the change in the objects kinetic energy
3
Q
Conservative force
A
The work done in moving an object between two points is independent of the path taken
Eg. Gravitational force, electrostatic force
4
Q
Non conservative force
A
The work done in moving an object between two points depends on the path taken
Eg. Frictional force, air resistance, tension in a chord
5
Q
Principle of conservation of mechanical energy
A
The total mechanical energy in an isolated system remains constant
6
Q
Power
A
The rate at which work is done or energy is expended
