Work and power Flashcards
1
Q
Work
A
Any task accomplished which uses energy or force applied over a distance
Units= J or Nm = kgm/s^2
2
Q
Work equation
A
W= F x D cos(theta)
or
W= P x Change in volume
3
Q
Conservative forces
A
path-independent,
EX) Friction and air resistance
4
Q
Non-conservative forces
A
Path-dependent
EX) spring forces, gravity, electromagnetic
5
Q
Mechanical advantage
A
Using mechanical apparatus to perform work using less force
Win=Wout
6
Q
Mechanical advantage equation
A
Length/height
answer needs to be greater than 1 to show significance
7
Q
Power equation
A
P=w/t
units= j/s or watt
