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Satellites. Universal Gravitational Constant Force due to Gravity Centripetal Force. F g = mg. Mass of the earth. F g = mg F g = G mm e r 2. Mass of the earth. F g = mg F g = G mm e r 2 mg = G mm e r 2. Mass of the earth. F g = mg
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Satellites Universal Gravitational Constant Force due to Gravity Centripetal Force
Fg = mg Mass of the earth
Fg = mg Fg = Gmme r2 Mass of the earth
Fg = mg Fg = Gmme r2 mg = G mme r2 Mass of the earth
Fg = mg Fg = Gmme r2 mg = G mme r2 g = G me r2 Mass of the earth
Fg = mg Fg = Gmme r2 mg = G mme r2 g = G me r2 gr2 = me G 9.8m/s2(6.38e6m)2=me 6.67e-11N m2/kg2 Mass of the earth
Fg = mg Fg = Gmme r2 mg = G mme r2 g = G me r2 gr2 = me G 9.8m/s2(6.38e6m)2=me 6.67e-11N m2/kg2 Mass of the earth
Fg = mg Fg = Gmme r2 mg = G mme r2 g = G me r2 gr2 = me G 9.8m/s2(6.38e6m)2=me 6.67e-11N m2/kg2 5.98e24= me Mass of the earth
Fc= mv2 r Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 v2 = G me r r2 Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 v2 = G me r r2 v2 = G me r Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 v2 = G me r r2 v2 = G me r v= 6.67e-11(5.98e24kg) 3.84e8m Velocity of the moon with respect to the earth
Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 v2 = G me r r2 v2 = G me r v= 6.67e-11(5.98e24kg) 3.84e8m v=1019m/s Velocity of the moon with respect to the earth
Geostationary Satellities • Rotate around the earth in 24hr
Geostationary Satellities • Rotate around the earth in 24hr • Therefore • t=
Geostationary Satellities • Rotate around the earth in 24hr • Therefore t=24hr(60min)(60sec)=86400s
Geostationary Satellities • Rotate around the earth in 24hr • Therefore t=24hr(60min)(60sec)=86400s • v= 2 P r • t
Geostationary Satellities • Rotate around the earth in 24hr • Therefore t=24hr(60min)(60sec)=86400s • v= 2 P r Fg=Fc • t
v=2 P r t Geostationary Satellite
v=2 P r t v=2 P r 86400s Geostationary Satellite
v=2 P r t v=2 P r 86400s Fc= mv2 r Geostationary Satellite
v=2 P r t v=2 P r 86400s Fc= mv2 r Fg = Gmme r2 Geostationary Satellite
v=2 P r t v=2 P r 86400s Fc= mv2 r Fg = Gmme r2 mv2 = G mme r r2 Geostationary Satellite
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
mv2 = G mme r r2 v2 = G me r r2 v2 = G me r (2 P r )2 = G me (86400)2 r Geostationary Satellite 4P2 r2 = G me (86400)2 r 4P2 r3 = Gme (86400)2 r3 = (86400s)2 G(5.98e24kg) 4P2 G=6.67x10-11Nm2/kg2 r = r =4.22e7m
r3 = (86400s)2 G(5.98e24kg) 4P2 3 r= (86400s)2 (6.67e-11Nm2/kg2)(5.98e24kg) 4P2 Geostationary Satellite
3 r=(86400s)2 (6.67e11Nm2/kg2 (5.98e24kg) 4P2 r =4.22e7m Geostationary Satellite
Geostationary Satellite velocity with respect to the earth • V= 2pr =2 p ( 4.22e7m) 86400s 86400s v=3069m/s
Geostationary Satellite velocity with respect to the earth • V= 2pr =2 p ( 4.22e7m) 86400s 86400s v=3069m/s
Geostationary Satellite velocity with respect to the earth • V= 2pr =2 p ( 4.22e7m) 86400s 86400s v=3069m/s
Fc= mev2 r Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 mev2 = G m e ms r r2 Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 mev2 = G m e ms r r2 v2 = G ms r r2 Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 mev2 = G m e ms r r2 v2 = G ms r r2 v2 = G ms r Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 mev2 = G m e ms r r2 v2 = G ms r r2 v2 = G ms r v= 6.67e-11(1.99e30kg) 1.51e11m Velocity of the earth with respect to the sun
Fc= mev2 r Fg = Gmems r2 mev2 = G m e ms r r2 v2 = G ms r r2 v2 = G ms r v= 6.67e-11(1.99e30kg) 1.51e11m v=29648 m/s Velocity of the earth with respect to the sun
Fc= mmv2 r Fg = Gmmms r2 mmv2 = G m m ms r r2 v2 = G ms r r2 v2 = G ms r v= 6.67e-11(1.99e30kg) 1.51e11m v=29648 m/s Velocity of the moon with respect to the sun
Fc= mgv2 r Fg = Gmgms r2 mgv2 = G m g ms r r2 v2 = G ms r r2 v2 = G ms r v= 6.67e-11(1.99e30kg) 1.51e11m v=29648 m/s Velocity of the Geostationary Satellite with respect to the sun
Bipolar Star System Two stars 8x1010m apart rotate about a point 4x1010 m from each other in a circular path in 12.6 years. The two stars have the same mass. What is the velocity of the stars? What is the mass of the stars?