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29 Cards in this Set

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thin hoop about symmetry axis
MR2
thin hoop about diamter
1/2 MR2
point mass about axis
MR2
disk or cylinder about symmetry axis
1/2 MR2
thin rod about perpendicular axis through center
1/12 Ml2
thin rod about perpendicular axis through end
1/3 Ml2
solid sphere about diameter
2/5 MR2
thin spherical shell about diamter
2/3 MR2
second condition of equilibrium
torque=f1d1-f2d2-f3d3
newton's second law for rotation
net torque=moment of inertia X angular acceleration
angular momentum
L=Iw
machine's mechanical advantage
MA=output force/input force
efficiency
eff=Wout/Win
revs to radian conversion
1rev=2pirad
theta
theta=s/r
conversion from angle in radian to angle in degrees
theta(rad=(pi/180) x theta(degree)
angular displacement
angular displacement=change in arc length/distance from axis
angular speed
average angular speed=angular displacement/time interval
angular acceleration
average angular acceleration= change in angular speed/
wf=
wf=wi+(angular acceleration)(t)
angular displacement
wit + 1/2(angular acceleration)(t2)
wf2
wf2=wi2+ 2(angular acceleration)(angular displacement)
angular displacement
angular displacement=1/2(wi+wf)(t)
tangential speed
distance from axis X angular speed
tangential acceleration
tangential acceleration=distance from axis X angular acceleration
force that maintains circular motion
Fc=mass X (tangential speed)2/distance to axis
force that maintains circular motion
Fc=mass X distance to axis X (angular speed)2
gravitational force
Fg=G(m1m2)/r2
Gravitational constant
G=6.673X10-11