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4 Aug 2019
Satellites feel the gravitational pull of the earth. They remainin orbit because of their velocity, which acts to counteractgravity. (The satellite wants to fly out in a straight line, butgravity forces it to curve towards the earth.) Consider acommunications satellite that needs to be 39000 km above theEarth's surface.
(a) Assuming the satellite travels in a perfect circle, what is theradius of the satellite's travel. (The radius of the earth is 6375km.)
(b) At the satellite's altitude, the acceleration of gravity is0.193 m/s2. What is the magnitude of the tangential velocity thatthe satellite must have to remain in orbit?
(c) How much time will the satellite take to orbit the earth?
Satellites feel the gravitational pull of the earth. They remainin orbit because of their velocity, which acts to counteractgravity. (The satellite wants to fly out in a straight line, butgravity forces it to curve towards the earth.) Consider acommunications satellite that needs to be 39000 km above theEarth's surface.
(a) Assuming the satellite travels in a perfect circle, what is theradius of the satellite's travel. (The radius of the earth is 6375km.)
(b) At the satellite's altitude, the acceleration of gravity is0.193 m/s2. What is the magnitude of the tangential velocity thatthe satellite must have to remain in orbit?
(c) How much time will the satellite take to orbit the earth?
Sixta KovacekLv2
5 Aug 2019
