topic 1 Flashcards
FORMULA FOR MAGNITUDE OF GRAV FORCE?
FG=G M1M2/R2
G constant henry cavendish
6.67×10^-11 Nm2/kg2
FORMULA FOR GRAVITATIONAL FIELD
g=GM/R2
if OBJECT WITH MASS M IS PLACED AWAY FROM R THE OBJECT WITH MASS THE GRAV FORCE IS?
Fg=mg
formula for magnitude with only one mass
g=GM/R2
unit of g?
unit of fg?
m/s2
N
formula FOR ECCENTRICITY
e=c/a
FORMULA FOR DISTANCE BETWEEN FOCI
c2=a2-b2
Formula for HARMONIC LAW
p2 planet/a3 planet =p2 earth/a3 eartj
formula for semi major axis
A=3√Gmst2/4π2
Stress?
force/Area
f/a
strain?
∆dimension/original dimension
MODULUS OF ELASTICITY
stress/strain
TENSILE STRESS
f/a
TENSILE STRAIN?
∆L/Lo
Youngs MODULUS?
E=tensile stress/tensile strain
youngs modulus formula final
E=FLo/A∆L
UNIT OF Nm3
Volume Stress?
P=F/A
Volume STRAIN
∆V/Vo
Bulk MODULUS?
P=B ∆V/Vo
if volume change is unknown in bulk modulus?
∆V=PVo/B
SHEAR STRESS?
f/a
SHEAR STRAIN
s/d
if theres angle sin°
MAXIMUM SHEAR STRESS?
tmax = 16(FD) /π(d4-d initial4)
unit of Nm2