19 For the rest of class: 1-Gravitational problem set 2-Lab: centripetal forceFinish the calculationsAnalysisConclusion due at the end of class.
20 Out:If the distance between two point particles is doubled, then the gravitational force between them:Decreases by a factor of 4Decreases by a factor of 2Increases by a factor of 2Increases by a factor of 4Cannot be determined without knowing the masses.
21 A rubber stopper goes in a circle with a string of radius 2 meters A rubber stopper goes in a circle with a string of radius 2 meters. The string is inclined at 40o from vertical. The stopper has a mass of .3 kg. The string has a tension of 10 N. How fast is the stopper going?