hw3ans

# hw3ans - Phys 341 Homework#3 Solutions 1 As a reminder here...

This preview shows pages 1–2. Sign up to view the full content.

Phys 341: Homework #3 Solutions 1. As a reminder, here is the figure: (a) The dotted line corresponds to the more massive star (#1) and the dashed line to the less massive star (#2). We know this because the same force acts on both stars, and by F = ma the more massive star will move less. (b) The left-hand velocity curve corresponds to #1, and the right-hand curve to #2. Star #2 has a larger orbit, so it travels farther in each period, which means that it must have a larger velocity amplitude. Or, again invoking F = ma , the star with the smaller mass has the larger acceleration and hence velocity. (c) There are several principles that help us associate the star locations with points on the velocity curve. First and foremost, the stars must always be on opposite sides of the center of mass. Second, when the x -component of the velocity is zero, the stars must be moving in the y -direction, which means that each star must be at one end of its ellipse or the other. Third, when the stars are near each other the force is large, so the acceleration is large.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern