- Home
- Standard 9
- Science
7. MOTION
medium
An artificial satellite is moving in a circular orbit of radius nearly $42.250 \,km .$ Calculate its linear velocity, if it takes $24$ hour to revolve round the earth.
Option A
Option B
Option C
Option D
Solution
Given $r=42.250 km , T =24$ hours $=86400 s$
The linear velocity is given by the expression
$v=\frac{2 \pi r}{ T }=\frac{2 \times 3.14 \times 42250}{86400}=3.07 \approx 3.1 km s ^{-1}$
Standard 9
Science
Similar Questions
medium