   Chapter 5, Problem 40P

Chapter
Section
Textbook Problem

(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F → at an angle θ with respect to the horizontal. The coefficient of kinetic friction between block and table is μk the force exerted by friction equal to μkmg? If not, what is the force exerted by friction? (b) How much work is done by the friction force and by F → ? (Don’t forget the signs.) (c) Identify all the forces that do no work on the block, (d) Let m = 2.00 kg, x = 4.00 m, θ = 37.0°, F= 15.0 N, and μk = 0.400, and find I the answers to parts (a) and (b). Figure P5.39

(a)

To determine
The force exerted by the friction.

Explanation

Given Info:

The coefficient of kinetic friction is μk .

Mass of the block is m .

Formula to calculate the friction force is,

fk=μkn       (I)

• μk is the coefficient of kinetic friction
• n is the normal force

From the diagram,

n+Fsinθmg=0

On re-arranging,

n=mgFsi

(b)

To determine
The work done by the friction force and by applied force.

(c)

To determine
The forces that do not work on the block.

(d)

To determine
The frictional force, the work done by friction force and applied force.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

1L= ________dm3= ________cm3= ________mL

Introductory Chemistry: A Foundation

How do eating disorders affect health?

Understanding Nutrition (MindTap Course List)

What is the definition of an unsaturated hydrocarbon?

Chemistry for Today: General, Organic, and Biochemistry 