SampleTestQs298_1Sp08 - d Draw a free body diagram for...

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

View Full Document Right Arrow Icon
Sample ‘work-out’ test questions for Phys 298 exam 1. 1. Consider a particle whose position is well-described by the expression r r = ( bt 2 " ct ) ) i + (8 t " 10) ) j , where r is measured in meters and t is time in seconds, b is a constant with numerical value 2, and c is a constant with numerical value 8. a. What are the units of the constant b ? b. What is the position of the particle when it stops moving in the x - direction? c. Write the acceleration of the particle in vector form. d. Is the motion of this particle most similar to free fall, projectile motion, circular motion, or motion due to a variable force? 2. Block A, of mass M, rests on a ramp inclined at angle θ to the horizontal. Block B, of mass m, hangs from an ideal string, which is routed over an ideal pulley and connected to block A. Block A is on the verge of slipping down the ramp. a. What kind of friction is block A experiencing? b. Is the mass of block B less than, greater than, or equal to that of block A? c. Draw a free body diagram for block B.
Image of page 1

Info iconThis 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.

Unformatted text preview: d. Draw a free body diagram for block A. e. Write Newton’s second law for the forces on block B. What is the tension in the string? f. Write Newton’s second law for the forces on block A parallel to the plane. g. What is the coefficient of friction between block A and the ramp? Sample multiple choice: 3. You are driving forward when you make a turn. You notice that the fuzzy die hanging from your rear view mirror is hanging at an angle 7 degrees to the left of vertical. Which direction are you turning? a. Left b. Right c. Not really turning – the Earth turns d. Dude, I don’t even know what you’re talking about! 4. You are driving at speed v while you make a turn. You notice that the fuzzy die hanging from your rear view mirror is hanging at an angle θ with respect to the vertical. What is the radius of your turn in terms of given quantities and known constants? a. r = vt b. r = v " c. r = v 2 g tan d. r = 0...
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