Concept explainers
The sides of a cone make an angle ϕ with the vertical. A small mass m is placed on the inside of the cone and the cone, with its point down, is revolved at a frequency f (revolutions per second) about its symmetry axis. If the coefficient of static friction is μs, at what positions on the cone can the mass be placed without sliding on the cone? (Give the maximum and minimum distances, r, from the axis).
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 5 Solutions
Modified Mastering Physics With Pearson Etext -- Standalone Access Card -- For Physics For Scientists & Engineers With Modern Physics (5th Edition)
Additional Science Textbook Solutions
College Physics: A Strategic Approach (4th Edition)
Essential University Physics (3rd Edition)
Conceptual Physical Science (6th Edition)
Essential University Physics: Volume 1 (3rd Edition)
University Physics with Modern Physics (14th Edition)
- A box of bananas weighing 40.0 N rests on a horizontal surface.The coefficient of static friction between the box and the surfaceis 0.40, and the coefficient of kinetic friction is 0.20. If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on it?arrow_forwardA 45 kg box is at rest at one end of a 2 meter board. That end of the board is slowly raised at an incline until the box starts to slide. At that point, the angle is at 34 degrees. The coefficient of kinetic friction is 0.50N. Please help me calculate the coefficient of static friction between both the box and the board?arrow_forwardA block of mass 1.45 kg is resting on a board with friction.The board is inclined until the mass just starts to slide. If the angle of the incline when the mass just barely begins to slide is 17.5 degrees,what is the coefficient of static friction between the block and the board?arrow_forward
- Mass mB = 25 kg is on a horizontal surface connected by a rope over a pulley to mass mA = 15 kg. Static friction keeps the blocks stationary. What is the minimum coefficient of static friction between mB and the table? Give your answer in the appropriate number of significant digits.arrow_forwardKarev is lowering two boxes, one on top of the other, down the ramp, as shown in the figure, by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.444, and the coefficient of static friction between the two boxes is 0.800. (b) What are the magnitude of the friction force on the upper box?arrow_forwardA block of mass m = 10.5 kg rests on an inclined plane with a coefficient of static friction of µ, = 0.11 between the block and the plane. The inclined plane is L = 6.9 m long and it has a height of h = 3.3 m at its tallest point. Write an expression, in terms of 0, the mass m, the coefficient of static friction u, and the gravitational constant g, for the magnitude of the force due to static friction, F, just before the block begins to slide. Will the block slide?arrow_forward
- Connected objects with inclined plane problem. Consider the figure where you have two boxes connected by a string over a pulley. The smooth (frictionless) ramp is inclined to a an angle of 35° with the flat ground, and the box on the ramp has a mass of 6.40 kg. The mass of the 6.4 kg hanging box is m = 3.05 kg. You don't need to consider significant figures in your answer, but don't round excessively partway through your calculations. 35° Find (a) the direction and (b) the magnitude of the hanging box's acceleration.arrow_forwardA block of mass m = 19.5 kg rests on an inclined plane with a coefficient of static friction of μs = 0.11 between the block and the plane. The inclined plane is L = 6.7 m long and it has a height of h = 3.35 m at its tallest point. What angle, θ in degrees, does the plane make with respect to the horizontal? What is the magnitude of the normal force, FN in newtons, that acts on the block? What is the component of the force of gravity along the plane, Fgx in newtons? Will the block slide?arrow_forwardA loaded penguin sled weighing 80 N rests on a plane inclined at angle 0=20° to the horizontal. Between the sled and the plane, the coefficient of static friction is 0.25 and the coefficient of kinetic friction is 0.15. (a) What is the smallest magnitude of the force parallel to the plane that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude of the force that will start the sled moving up the plane? (c) What value of the force is required to move the sled up the plane at constant velocity?arrow_forward
- The coefficient of kinetic friction between a box and the floor is μk = 0.14 and the coefficient of static friction is μs = 2.0μk. Calculate the ratio of static to kinetic friction force if m = 8 kg.arrow_forwardA woman exerts a horizontal force of 145 N on a crate with a mass of 38.7kg. (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)? (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? (Assume the crate remains stationary.)arrow_forwardA block is placed on a wooden plank, which is initially horizontal. One end of the plank is slowly raised to make it more and more inclined, and for a while the block stays in place on the plank and doesn't slide due to static friction. Finally, when the plank reaches an incline of 56.3oabove horizontal, the block begins to slide. What is the coefficient of static friction between the block and the plank?arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337553278/9781337553278_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780321820464/9780321820464_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134609034/9780134609034_smallCoverImage.gif)