A 200-k.g communications satellite is placed into a circular orbit around Earth with a radius of 4.23 107 m (26,300 miles) (Figure 2.57),
(a) Find the gravitational force on the sateline. (There is some useful information in Section 2.7.)
(b) use the equation for equation for to centripetal force the speed of the Stateline.
(c) Show that the period of the Stateline −the time it takes to complete one orbit −is 1 day. (the distance it travels during one orbit is 2 ,6.8 times the radius.) This is a gtosynrhnnoiss orbit: the satellite stays above a fixed point on Earths equator.
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