Work, ENERGY, POWER Flashcards
A force is applied to an object, and that object moves in the direction of the force
Work
Pulling or pushing motion
Force
Formula for work
W=Fd
What is work done by weight?
When you pull an object against gravity
Work against weight
Lifting
Force that Stops an object from moving
Friction
All effort exerted is equal to
Work
When you stretch a spring you have done
Work
Formula for a work done in a spring
W= 1/2 k◇x
Formula of Hooks Law
F=-kx
Ability to do work
Energy
Work-energy Theorem
Work done one an object is equal to the change in its energy
Kinetics energy formula
KE=1/2mv2
Type of force in physics that has a specific property related to the work done
Conservative forces
Example of Conservative force
Gravitational Force
Force exerted on a spring
Elastic Force
Force exerted on a spring
Elastic Force
The energy an object possess due to its position
Potential energy
Potential Energy Formula
PE=mgh
Higher position=
Higher potential energy
Path dependent force
Non-conservative forces
Example of non-conservative force
Friction
Air resistance
Tension in rope
Formula for work done by non-conservatjve forces
W=Fdcos0
Energy can neither be
Created or destroyed
Heat energy
Thermal energy
Energy stored in atom bonds
Chemical energy
Power formula
P= W/t
Measure of how fast work is done
Power
Power at a specific moment in time
Instantaneous power
Instant power formula
Pinst= change in W/ change in T
