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Chapter: 9th Science : Universe

Time period of a Satellite

Time taken by the satellite to complete one revolution round the Earth is called time period.

Time period of a Satellite

Time taken by the satellite to complete one revolution round the Earth is called time period.

Time period, T =  Distance covered / Orbital velocity .

T = 2πr/v


 

Example

At an orbital height of 500 km, find the orbital period of the satellite.

Solution

h = 500x103m,

R = 6371x103m,

v = 7616x103 kms-1.

Substituting the values,

T = 2π(R + h)/v = 2 × [22/7]  × [(6371+ 500) / 7616]

= 5.6677x103s = 5667 s.


This is T ≈ 95 min


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