Physics_7A_-_Spring_2006_-_Lanzara_-_Midterm_2_Solutions

Physics_7A_-_Spring_2006_-_Lanzara_-_Midterm_2_Solutions -...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
Image of page 5

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

View Full Document Right Arrow Icon
Image of page 6
Problem 4 a) dt dv t M a t M v dt dm dt v dm dt dp F r r ) ( ) ( * = = = = = Here v r is the relative velocity between water and the cart. Since the velocity of water is changing from v w to V(t), ). ( t v v v w r ! = So )) ( ( ) ( 1 ) ( 1 t v v dt dm t M v dt dm t M dt dv w r ! = = . b) dt dl dt dl dl dm dt dm ! = = * & r v dt dl = is also the relative velocity between water and the cart. Finally )). ( ( t v v v dt dm w r ! = = " " If you find it’s not so easy to understand why it should be the relative velocity, not v
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: w , just try to switch to the moving frame of the cart. Image you’re moving with the cart, the velocity of the water now becomes v w-v(t), then it become natural that )) ( ( t v v w ! represents the amount of water coming into collision with the cart in the time interval dt....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern