A 50-Kg Satellite Circles the Earth in an Orbit with a Period

question 20

Multiple Choice

A 50-kg satellite circles the Earth in an orbit with a period of 120 min.What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 * 10⁶ m,mass = 6.0 *10²⁴ kg)

• A)2.9 *10⁸ J
• B)3.5 *10⁸ J
• C)4.1 * 10⁸ J
• D)4.7 * 10⁸ J
• E)5.9 * 10⁸ J

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