Suppose that a spacecraft goes into orbit about an unknown moon. suppose that the altitude (above the surface) at periapsis is 1000 km (kilometers) and at apoapsis the altitude (above the surface) is 5000 km. suppose that the radius of the moon is approximately 1000 km. the period of the vehicle’s orbit about the moon is 9.5 hours. estimate the mass of this moon. the universal gravitational constant is g

M = 1.3667 × 10²² Kg

Explanation:

given,

altitude above at periapsis = 1000 Km

altitude at apoapsis = 5000 Km

radius of moon = 1000 Km

periodic vehicle orbit about moon is = 9.5 hours

mass of the moon = ?

time period = 9.5 hours

G = 6.68 x 10⁻²⁰ Km³/sec².Kg

using keplers formula

where a is semi major axis

a = 3000 Km

M = 1.3667 × 10²² Kg

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.