WORK & POWER Flashcards
1
Q
what is the formula of work
A
work = force x displacement
2
Q
unit of work in MKS
A
joules = Newton = meter
3
Q
unit of work in CGS
A
ergs = 10^ - 7 joules
4
Q
unit of work in english
A
foot - pound
5
Q
force must be?
A
must be in the same direction as the displacement
6
Q
if the force is perpendicular to the displacement
A
work = 0
7
Q
if displacement is 0
A
work = 0
8
Q
formula of power
A
power = work/time
power = force x velocity
9
Q
unit of power
A
watts (W) = joule/sec
10
Q
1 horsepower =
A
= 746 watts
