Physics1A_midterm1 - 1(40 pts A crate of mass M which...

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

View Full Document Right Arrow Icon
1) (40 pts) A crate of mass M, which contains an expensive piece of scientific equipment, is being delivered to UCLA. The delivery truck has a freight bed of length L (see the figure), with a coefficient of static friction μ s and a coefficient of kinetic friction μ k . Rather than move the heavy crate himself, the driver tilts the truck bed by an angle θ (see figure) and then drives the truck forward with increasing acceleration a , until the crate begins to slide. For this problem, use the x, y coordinate system shown in the figure. These coordinates are fixed with respect to the truck’s bed, not to the ground. (a) Draw a free-body force diagram for the crate in the truck’s frame of reference. (b) Write down Newton’s second law for the motion of the crate in the x and y directions, just before it begins to slip. (c) Determine the minimum acceleration a min for which the crate will begin to slip. Express your answer in terms of the constants shown in the figure. When the truck reaches a min
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
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