Lesson: Orbital Speed Physics • 9th Grade
In this lesson, we will learn how to calculate the orbital speed of an object moving along a circular orbit given its orbital radius and the mass of the object it orbits.
Titan is the largest moon of Saturn. Assuming that Titan follows a circular orbit, with a radius of 1,220,000 km and an orbital speed of 5.57 km/s, calculate the mass of Saturn. Use a value of m3⋅kg−1⋅s−2 for the universal gravitational constant. Give your answer in scientific notation to two decimal places.
A satellite follows a circular orbit around Earth at a radial distance and with an orbital speed . If the satellite were moved closer to Earth, so that it followed a circular orbit with a radius of , at what speed, in terms of , would it have to move in order to maintain its orbit?
A satellite follows a circular orbit around Earth at a radial distance and with an orbital speed . At what radius, in terms of , would the satellite have to orbit in order to have an orbital speed of ?