Figure 18.17 shows the variation of the Earth's gravitational field strength with distance from its centre. g/N kg-¹ 10.0- 8.0- 6.0- 4.0- 2.0- 5.0 R 10.0 15.0 20.0 25.0 r/106 m Figure 18.17 For End-of-chapter Question 11. a Determine the gravitational field strength at a height equal to 2R above the Earth's surface, where R is the radius of the Earth. b A satellite is put into an orbit at this height. State the centripetal acceleration of the satellite. c Calculate the speed at which the satellite must travel to remain in this orbit.
Figure 18.17 shows the variation of the Earth's gravitational field strength with distance from its centre. g/N kg-¹ 10.0- 8.0- 6.0- 4.0- 2.0- 5.0 R 10.0 15.0 20.0 25.0 r/106 m Figure 18.17 For End-of-chapter Question 11. a Determine the gravitational field strength at a height equal to 2R above the Earth's surface, where R is the radius of the Earth. b A satellite is put into an orbit at this height. State the centripetal acceleration of the satellite. c Calculate the speed at which the satellite must travel to remain in this orbit.
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Transcribed Image Text:Figure 18.17 shows the variation of the Earth's gravitational field strength with distance from its centre.
g/N kg ¹
10.0-
8.0-
6.0-
4.0
2.0-
5.0 R
10.0
15.0
20.0
25.0
r/ 106 m
Figure 18.17 For End-of-chapter Question 11.
a Determine the gravitational field strength at a height equal to 2R above the Earth's surface, where
R is the radius of the Earth.
b A satellite is put into an orbit at this height. State the centripetal acceleration of the satellite.
c Calculate the speed at which the satellite must travel to remain in this orbit.
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