B find the magnitude of the friction force exerted by

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

View Full Document Right Arrow Icon
b) Find the magnitude of the friction force exerted by the bed on the crate when the truck decelerates at 1.2 m/s 2 . c) Find the magnitude of the friction force exerted by the bed on the crate when the truck decelerates at 3.5 m/s 2 . 4. Problem 12.39 in your book. 5. Gravity causes a gymnast to rotate from a horizontal position clockwise around a high bar. Assuming she keeps her body in a straight line as she rotates the distance from her hands to her center of gravity is constant and = L: a) write expressions for position, velocity, and acceleration of the center of gravity using a Cartesian coordinate system and the origin indicated. b) use conservation of angular momentum to write an expression for ˙ ˙ " . c) What does the equation in part b tell us about the relationship between acceleration and the gymnast’s mass? height?
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
Work Energy Methods (Ch 13) 6. A 3,500 lb car is traveling down a 6 o incline at 60 miles per hour when the breaks are suddenly applied, producing a breaking force of 1.500 lb.
Image of page 2
This is the end of the preview. Sign up to access the rest of the 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