Unit 4 Practice Problems - Physics Honors Worksheet...

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

View Full Document Right Arrow Icon
Physics Honors Worksheet: Chapters 9 and 16 A 3.5-m long diving board has a mass of 30 kg. It is connected to two pylon supports, as shown in the diagram at right. 1) Relative to pylon B, what torque is applied by the weight of the diving board? = 191 N·m [into the page] 2) What force must pylon A exert on the diving board to keep it in equilibrium? F = 174 N [D] 3) What force must pylon B exert on the diving board to keep it in equilibrium? F = 468 N [U] A uniform plank, with length L and mass m , rests on the ground and against a frictionless roller at the top of a wall of height h = ½ L . The angle between the plank and the horizontal is . Friction acts on the bottom of the plank. 4) Show that the force the roller applies to the plank is given by cos sin F mg 5) When L = 6 m and m = 40 kg, the bottom of the plank will slip if is less than 60º. What is the coefficient of static friction? s = 0.479 A pole is held up in the position shown at right by friction at its bottom and by the tension in a horizontal wire connected to its top. A block is suspended from the pole a distance x from the top of the pole. 6) What normal force acts on the bottom of the pole? 2107 N 7) If x = 2.50, what is the friction force acting on the pole?
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