Equations Flashcards
1
Q
Force
A
F=ma, N= kg/ ms^2
2
Q
Torque
A
T= f * d. Force must be perpendicular to object to cause rotation … Clockwise is negative
3
Q
Work
A
W= FD cos theta
4
Q
Kinetic energy
A
KE= 1/2 mv^2
5
Q
Potential energy
A
PE= mgh
6
Q
Mechanical energy
A
PE + KE
7
Q
conservation of energy
A
PEi + KEi= PEf + KEf (Initial= final energy)
8
Q
Spring force
A
Force= -kX k= spring constant, x= springs length change
9
Q
PE spring
A
PE= 1/2 k X^2
10
Q
Mechanical advantage
A
MA= Fo/Fi = output/input force
11
Q
Speed of light
A
c= wavelength x f
12
Q
Photon energy
A
E photon= hf
13
Q
Frequency of sound
A
F= 1/T, where t is the period
14
Q
Speed of sound
A
wavelength/ T= wavelength*F as wavelength increases, frequency decreases
15
Q
Capacitance
A
C= Q/V in Farads
