Question

A satelite around the Earth in a circular orbit 500 kilometres above the Earth's surface. The radius of the Earth taken as 6400 kilometres.
a) Write down the radius of the satellites's orbit.
b) Calculate the dostance travelled by the satellite in one orbit of the Earth. Give your answer correct to the nearest km.

Answer 1

A)
r= R+500 km -promień orbity satelity
R=6400 km -promień Ziemi

r=R+500 km
r=6400 km + 500 km
r=6900 km

Odp. Satelita krąży po orbicie o promieniu 6900 km.

b)
r=6900 km - promień orbity
π≈3,141592654
O-obwód orbity

O=2πr
O=2 * 3,141592654 * 6900 km
O=43353,97862 km≈ 43354 km

Odp. Obwód orbity wynosi ok. 43354 km.