Given,
Radius of the orbit (r)=7880km=7880∗103m
Height (h)=1500km=1500∗103m
Period of revolution (T)=?
Radius of earth (R)=r−h=(7880−1500)∗6380∗103m
We have,
T=2π∗√(R+h)3(g∗R)2
or, T=2π∗√(6380000+1500000)39.8∗(6380000)2=6955.29Sec=1.91hrs
∴ The time period of the revolution = 1.91hrs.
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