The coefficient of static friction between the tires of a car and a horizontal road is s
Question:
The coefficient of static friction between the tires of a car and a horizontal road is µs = 0.6. If the net force on the car is the force of static friction exerted by the road,
(a) What is the maximum acceleration of the car when it is braked?
(b) What is the least distance in which the car can stop if it is initially traveling at 30 m/s?
Step by Step Answer:
Draw the freebody diagram a Apply F m a a y ...View the full answer
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Related Video
Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.
Students also viewed these Mechanics questions
-
The coefficient of static friction between Teflon and scrambled eggs is about 0.04. What is the smallest angle from the horizontal that will cause the eggs to slide across the bottom of a...
-
In Fig. 4-56 the coefficient of static friction between mass mA and the table is 0.40, whereas the coefficient of kinetic friction is 0.20. (a) What minimum value of mA will keep the system from...
-
In Example 10.2, assume that the coefficient of static friction between the hockey puck and a horizontal rough surface (on the merry-go-round) is s. How far away from the center of the merry-go-round...
-
Identify the five number summary for the following data set: 35 24 54 2 36 23 16 43 59 55 28 81
-
What property of a diode enables it to convert ac to pulsed dc?
-
Joel receives a $40,000 cash distribution from the JM Partnership, which reduces his partnership interest from one-third to one-fourth. The JM Partnership is a general partnership that uses the cash...
-
What are the advantages and disadvantages of certified environmental product declarations? Assuming that you are the environmental manager of Global Autos, with companies operating in Sweden,...
-
Colwell Recycling recycles newsprint, cardboard, and so forth, into recycled packaging materials. For the coming year, Colwell Recycling estimates total manufacturing overhead to be $ 348,950. The...
-
MCV4U - Unit 7 - Unit TEST 1. [8 Marks]. Four forces of magnitude 5N, 9 N, and 14 N are arranged as shown in the diagram at the left. Determine the resultant of these forces. 9N 5N 10 N 14 N 2. [6...
-
1. How did Netflix use innovation in its business strategy to gain and sustain a competitive advantage? What role did strategy, technology, and business models play? Explain in detail. 2. Why is...
-
A box weighing 600 N is pushed along a horizontal floor at constant velocity with a force of 250 N parallel to the floor. What is the coefficient of kinetic friction between the box and the floor?
-
The force that accelerates a car along a flat road is the frictional force exerted by the road on the car's tires. (a) Explain why the acceleration can be greater when the wheels do not spin. (b) If...
-
Use the character table in Problem 6 to show by calculation that L z L z is a basis function for irreducible representation B 1 B 1 . Data from Problem 6 Here is the character table for point group...
-
The underutilization of ICTs in nonprofits is common. What are the major barriers to effective use? What are some specific issues impacting technology use in human service organizations?
-
How does each of the four identified dimensions of communication (content, noise, network, and direction) figure into promoting effective exchanges in nonprofit organizations? What is the role of the...
-
Technology has had a major influence on the nonprofit workplace. In what ways have ICTs improved the quality of work life? How have they changed the dynamics in less positive ways?
-
What are some of the arguments for and against greater commercialization of the nonprofit sector?
-
Since diversification of funding sources seems so logical, why do some nonprofits resist going in this direction? How would you overcome this resistance?
-
What is meant by an objective and what by a constraint in the requirements for a design? How do they differ? How are they used?
-
An 8.0 kg crate is pulled 5.0 m up a 30 incline by a rope angled 18 above the incline. The tension in the rope is 120 N, and the crates coefficient of kinetic friction on the incline is 0.25. a. How...
-
Calculate the equilibrium concentration and the percent ionization of HA in 1.00 M HA(aq) at 25 C, assuming K a is equal to (a) 1.00 x 10 5 ; (b) 1.00 x 10 -5 .
-
You stand on the seat of a chair and then hop off. (a) During the time you are in flight down to the floor, the Earth is lurching up toward you with an acceleration of what order of magnitude? In...
-
Three forces acting on an object are given by F1 = (2.00i + 2.00j) N, F2 = (5.00i 3.00j) N, and F3 = (45.0i) N. The object experiences an acceleration of magnitude 3.75 m/s2. (a) What is the...
-
A 15.0-lb block rests on the floor. (a) What force does the floor exert on the block? (b) If a rope is tied to the block and run vertically over a pulley, and the other end is attached to a...
-
9- Assume that printer interrupt priority: 2, disk interrupt priority:4, serial line interrupt priority: 6, Ethernet interrupt priority: 5. Determine the order of interrupt services according to: A...
-
4- Assume that printer interrupt priority: 2, disk interrupt priority:4, Ethernet interrupt priority: 5. A user program starts at t = 0 and takes 40 seconds to complete. At t = 10, a disk interrupt...
-
Robbie is a 3 year old boy in the bur oak room at little.ly early learning centre. You have been one of robbies educators for the past two weeks. You and your colleagues have been concerned about...
Study smarter with the SolutionInn App