You place two different coins on the cover of your physics book and then slowly lift the
Question:
You place two different coins on the cover of your physics book and then slowly lift the cover. Assuming the coefficients of static friction are the same, which is true?
(a) The more massive coin starts to slide first.
(b) The less massive coin starts to slide first.
(c) The two coins start to slide at the same time.
Step by Step Answer:
College Physics With An Integrated Approach To Forces And Kinematics
ISBN: 978-1260547719
5th Edition
Authors: Alan Giambattista
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 Sciences questions
-
Two 2.6-lb collars A and B can slide without friction on a frame, consisting of the horizontal rod OE and the vertical rod CD, which is free to rotate about CD. The two collars are connected by a...
-
Two coins are to be flipped. The first coin will land on heads with probability .6, the second with probability .7. Assume that the results of the flips are independent, and let X equal the total...
-
Two steel blocks slide without friction on a horizontal surface; immediately before impact their velocities are as shown. Knowing that e = 0.75, determine (a) Their velocities after impact, (b) The...
-
Dodona I, LLC, invested $ 4 million in two securities offerings from Goldman, Sachs & Co. The investments were in collat-eralized debt obligations ( CDOs). Their value depended on residential...
-
In this problem, we analyze the effects of an import quota applied by a country facing a Foreign monopolist. In Figure 9-7, suppose that the Home country applies an import quota of X2, meaning that...
-
Compare and contrast structured design methodologies in general with rapid application development (RAD) methodologies in general.
-
The University of Wisconsin at Madison completed a study titled GenderEquity Study of Faculty Pay,dated June 5, 1992. The main purpose of the study was to determine whether women are treated unfairly...
-
Derrick owns a farm in eastern North Carolina. A hurricane hit the area and destroyed a farm building and some farm equipment and damaged a barn. Due to the extensive damage throughout the area, the...
-
(20 pts.) Hadamard matrices. The Hadamard matrices Ho, H1, H2,... are defined as follows: Ho is the 11 matrix [1] For k > 0, Hk is the 2k 2k matrix So, for example, H = and [Hk-1 Hk-1 Hk = Hk-1 -Hk-1...
-
Jimmy owns a garden in which he has planted N trees in a row. After a few years, the trees have grown up and now they have different heights. Jimmy pays much attention to the aesthetics of his...
-
A woman stands on an airport's moving sidewalk and moves due west at constant velocity. The frictional force on the woman is _____. (Ignore air resistance.) (a) Zero (b) Kinetic and to the west (c)...
-
(a) What assumptions do you make when you call the reading of a bathroom scale your weight? What does the scale really tell you? (b) Under what circumstances might the reading of the scale not be...
-
You have recorded the time slept on a Tuesday and the time slept on a Sunday for a random sample of 15 students. You want to investigate whether students tend to sleep more on weekends than on...
-
Compare the difference between an operating budget, a capital budget, and a cash budget. What are the primary elements in each budget?
-
Discuss the value of using microbased cost accounting in the hospital organization and the defi ciencies caused if cost accounting is not used or is used ineff ectively.
-
The focus of a strategic plan is different than a tactical plan because a. a strategic plan is has a long-term focus and a tactical plan looks just a few years ahead. b. it is not written down but...
-
Discuss the benefits to a health care organization of acquiring and using the ten necessary decision support tools.
-
Would you prefer to work in an organization with a vertical structure or a flat, horizontal structure? Would your answer change if you were the CEO instead of a new hire? How would you feel about...
-
The fastest vehicle flown by humans on a regular basis is the Space Shuttle which has a mass of about 1 105 kg and travels at a speed of about 8 103 m/s. Find the momentum of the Space Shuttle...
-
XYZ Inc. a calendar year, accrual basis corporation, had the following items during 2021: Gross revenue from operations Cost of goods sold $420,000 ($180,000) $9,000 LT capital gain .LT capital...
-
From the edge of the rooftop of a building, a boy throws a stone at an angle 25.0above the horizontal. The stone hits the ground 4.20 s later, 105 m away from the base of the building. (Ignore air...
-
Two angles are complementary when their sum is 90.0. Find the ranges for two projectiles launched with identical initial speeds of 36.2 m/s at angles of elevation above the horizontal that are...
-
The range R of a projectile is defined as the magnitude of the horizontal displacement of the projectile when it returns to its original altitude. (In other words, the range is the distance between...
-
a) Based on the information provided in the table below: i. Describe the impact of the cost behavior on economies of scale, constant returns to scale, and diseconomies of scale in each firm?...
-
Use the following information to answer questions below: Total current assets Total non-current assets Total current liabilities Long-term borrowings Share capital Revenue Gross profit Retained...
-
A Public Information Officer ( PIO ) for a public safety or emergency management agency might expect to spend what portion of his or her time on activities directly related to incident response or...
Study smarter with the SolutionInn App