A 325 N force is pulling on an 85.0 kg refrigerator as it slides across a horizontal floor. Theforce acts at an angle of 25.0° above the horizontal surface of the floor. The coefficient ofkinetic friction between the refrigerator and the floor is 0.150, and the refrigerator moves adistance of 5.50 m. Find (a) the work done by the pulling force, (b) the work done by theforce of kinetic friction, (c) the net amount of work done on the refrigerator, and (d) if therefrigerator was initially at rest determine the speed of the refrigerator after the 5.50mdisplacement. (e) Include a force (or free-body) diagram of the situation.]

Answered: A 325 N force is pulling on an 85.0 kg…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A 2 kg block is pushed 4.0 m along a horizontal floor by a force of magnitude 25 N at an angle θ=30.0° with the horizontal. The coefficient of kinetic friction between the block and the floor is 0.35. Calculate the magnitudes of (a) the work done by the applied force, (b) the work done by friction force, (c) the work done by the normal force, (d) the work done by gravity, (e) the change in kinetic energy of the block. cos30o =sin60o=0.866 cos60o =sin30o=0.500 g=9.8 m/s2
A 68.3-kg skier coasts up a snow-covered hill that makes an angle of 25.5 ° with the horizontal. The initial speed of the skier is 9.77 m/s. After coasting a distance of 1.45 m up the slope, the speed of the skier is 3.60 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force? (a) Number i (b) Number i Units Units 0
A 35 kg sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.25. Its velocity at point A is 10.0 m/s, and its velocity at point B is 2.0 m/s. You must use Work/Energy methods (not Kinematics). (a) What is the frictional force acting on the sled? (b) How much work is done on the sled by friction over the displacement ∆x = xB − xA? (c) What is the distance the sled travels between A and B?
F
A rope is used to pull a 4.09 kg block at constant speed 6.81 m along a horizontal floor. The force on the block from the rope is 7.58 N and directed 23.7° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the block-floor system, and (c) the coefficient of kinetic friction between the block and floor?
A block of mass 2.50 kg is pushed 3.00 m along a frictionless horizontal table by a constant 18.0 N force directed 25.0° below the horizontal. (a) Determine the work done by the applied force. (b) Determine the work done by the normal force exerted by the table. (c) Determine the work done by the force of gravity. (d) Determine the work done by the net force on the block.
A skier who initially stands still and weighs 72 kg (including skis) begins to slide down the inclined surface at an angle of 18° to the horizontal. The coefficient of kinetic friction between the skis and the snow surface is μk = 0.12. Calculate the net work done by the forces acting on the skier during the first 7 seconds of the slide.
A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.44 m/s. The pulling force is 104 N parallel to the incline, which makes an angle of 19.5° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.92 m. (a) How much work is done by the gravitational force on the crate? -152.37 J (b) Determine the increase in internal energy of the crate-incline system owing to friction. 471.0 X A careful free-body diagram of the crate may help you determine the magnitude of the friction force. J (c) How much work is done by the 104-N force on the crate? 511.68 J (d) What is the change in kinetic energy of the crate? 184.95 J (e) What is the speed of the crate after being pulled 4.92 m? 6.47 m/s
A 59.0-kg box is being pushed a distance of 6.70 m across the floor by a force P whose magnitude is 186 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.239. Determine the work done on the box by each of the four forces that act on the box. Be sure to include the proper plus or minus sign for the work done by each force. (a) Wp = i (b) W = (c) Wmg= i (d) WN= i
A man returning from ice fishing trip pulls a sled with fish. Total mass of the sled and fish is 50.0 kg. (b) Suppose the coefficient of kinetic friction between sled and snow is 0.20. The man pulls the sled 5.0 m by exerting a force of 120 N at 0°. Find the work done by force of frictional.
A 62.7-kg skier coasts up a snow-covered hill that makes an angle of 20.4 ° with the horizontal. The initial speed of the skier is 8.61 m/s. After coasting a distance of 2.21 m up the slope, the speed of the skier is 4.14 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force?

Recommended textbooks for you

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Lecture- Tutorials for Introductory Astronomy

Physics

ISBN:

9780321820464

Author:

Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden

Publisher:

Addison-Wesley

College Physics: A Strategic Approach (4th Editio…

Physics

ISBN:

9780134609034

Author:

Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher:

PEARSON

SEE MORE TEXTBOOKS