State Standards Correlation
Use the form below to view which of your state standards this resource addresses.
||Factual Errors in Gravity and Orbits
||James Johnson (Custer City, PA) on January 2, 2013
||Gravity and Orbits SciPack
Earth's Tides > Summary
Previous SectionNext Section00:5200:0000:53Summary
In this Science Object, we learned that there is a lot of similarity between physics in a freely falling elevator and a shuttle in Earth's orbit. Even though all objects in both of these experience Earth's gravitational forces, objects float in both. In our everyday language, the objects are weightless. The falling of the elevator and the orbiting of the shuttle do not depend on their masses. Objects in both experience the effects of microgravity.
We also learned that there is a required speed of an object to go into orbit with a particular radius. This orbital speed decreases with increasing radius. Likewise, the orbital period increases with increasing radius.
In the audio portion of the last section of text the speaker intones "...This orbital speed Increases with increasing radius. Also, the orbital period increases with increasing radius. "
I believe the text is correct. The orbital speed DECREASES with increasing radius. Not also, but, "However" the orbital period increases with increasing radius, I believe is correct, as evidenced by the planets characteristic lower orbital speed and increased orbital period around the sun, as the radius from the Sun's center of gravity increases in radius.
I think I have this right. Make sense?.