A"synchronous" satellite is put in orbit about a planet to always remain above the same point on the planet’s equator. the planet rotates once every 10.2 h, has a mass of 2.2 × 1027 kg and a radius of 6.99 × 107 m. given: g = 6.67 × 10−11 n m2 /kg2 . calculate how far above the planet’s surface the satellite must be

h = 1.014 x m

Explanation:

Given that,

The planet rotates once every 10.2 h

Therefore, in one hour it would take 1/10.2 rev/h

The rotational speed of the planet

                               = 0.098 rev/h

Converting into seconds

                                = 2.72 x rev/s

Converting to radians, the rotational angular velocity is

                             ω  = 1.709 x rad/s

The mass of the planet, M = 2.2  x Kg

Radius of the planet,      R  = 6.99 x  m

Gravitational constant,   G  = 6.67 x  Nm²/Kg²

To find the height 'h' of the synchronous orbit above the planet surface,

The orbital velocity of the planet is given by the expression

                                      V  =

Since

                                       V  = (R+h)ω

Substituting in the above equation

                                (R+h)ω =

Squaring on both sides

                                {(R+h)ω}² =

                                (R+h)³ =  

Solving for h

                                    h  =    - R

Substituting the values in the above equation

                 h =    m

                                   h  = 1.014 x m

So, the height of the synchronous orbit above the surface is 1.014 x m

kinetic

i'm so sorry if this is wrong i'm only in 6th grade xd

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