A 60-kg block slides along the top of a 100-kg block with an acceleration of 3 m/s
Question:
A 60-kg block slides along the top of a 100-kg block with an acceleration of 3 m/s2 when a horizontal force of 320 N is applied, as in figure. The 100-kg block sits on a horizontal frictionless surface, but there is friction between the two blocks.
(a) Find the coefficient of kinetic friction between the blocks.
(b) Find the acceleration of the 100-kg block during the time that the 60-kg block remains in contact.
SOke 100kg
Step by Step Answer:
a The solution is similar to that of the previous problem except that now the ...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
-
A 2.5-kg homogeneous disk of radius 100 mm rotates with an angular velocity 1 with respect to arm ABC, which is welded to a shaft DCE rotating as shown at the constant rate 2 = 12 rad/s. Friction in...
-
A 60-kg block slides along the top of a 100-kg block. The 60-kg block has an acceleration of 2 m/s2 when a horizontal force Fof 846 Nis applied, as in the Figure. There is no friction between the...
-
A 60-kg block slides along the top of a 10O kg block. The 60-kg block has an acceleration of 7 m/s2 when a horizontal force Fof 777 N is applied, as in the Figure. There is no friction between the...
-
Find a formula for the function 9(2) as a transformation of the function f(x). -3-2-1 0 x 23 -1 0 1 2 3 4 5 -690 6 -3 -12 g(x) 3 f(x)-1 1 2 -30-214
-
What is the impact speed of a car moving at 100 km/h that bumps into the rear of another car traveling in the same direction at 98 km/h?
-
A client is under the impression that a donor cannot incur a gift tax liability if he or she makes gifts to only U.S. charitable organizations. What should you say to the client?
-
Warren Smith practices medicine under the business title Warren Smith, M.D., P.C. During April, the medical practice completed the following transactions: The business uses the following accounts:...
-
A simple pendulum has a mass of 0.250 kg and a length of 1.00 m. It is displaced through an angle of 15.0 and then released. What are (a) the maximum speed, (b) The maximum angular acceleration, and...
-
y = (5+ cos(x))* Use Logarithmic Differentiation to find dy dx dy dx
-
1. How is performance management at DMG world media different from traditional performance management systems at other companies? 2. What was the impetus for developing a different performance...
-
A 100-kg mass is pulled along a frictionless surface by a horizontal force such that its acceleration is 6 m/s 2 (figure). A 20-kg mass slides along the top of the 100-kg mass and has an acceleration...
-
The coefficient of static friction between a rubber tire and the road surface is 0.85. What is the maximum acceleration of a 1000-kg four-wheel-drive truck if the road makes an angle of 12 with the...
-
On January 1, 2021, Marchelle Incorporated had an unlimited number of common shares authorized, 220,000 issued, and the balance in the Common Shares account was $2.2 million. The company reported a...
-
True or False. The matrix iteration method will never fail to converge to higher frequencies.
-
True or False. The fundamental frequency given by Durkerley's formula will always be larger than the exact value.
-
Distinguish between internal controls and internal controls over financial reporting, Under what circumstances does this distinction matter for auditors?
-
Name a few methods for finding the fundamental natural frequency of a multidegree-offreedom system.
-
True or False. The matrix iteration method requires the natural frequencies to be distinct and well separated.
-
This chapter introduced the families of processes with schematics of some of them. Good images of many processes can be found on the internet. Use the internet to find images for the following: a....
-
Find the image of x = k = const under w = 1/z. Use formulas similar to those in Example 1. y| y = 0 -21 -2 -1 -1, /1 12 T -1 -1 y= -2 x =0
-
A 0.32 mol amount of NH 3 is dissolved in 0.47 L of a 0.38 M silver nitrate solution. Calculate the equilibrium concentrations of all species in the solution.
-
Show that the escape speed from the surface of a planet of uniform density is directly proportional to the radius of the planet.
-
Two blocks of mass 3.50 kg and 8.00 kg are connected by a Mass less string that passes over a frictionless pulley (Fig.P5.68). The inclines are frictionless. Find (a) the magnitude of the...
-
Many people assume that air resistance acting on a moving object will always make the object slow down. It can actually be responsible for making the object speed up. Consider a 100-kg Earth...
-
How No matter what strategic planning process an organization chooses to follow, trade-offs and negotiations are important aspects. What are one or more successful strategies that you feel can be...
-
A photoelectron is produced from a bismuth surface (which has a work function of 4.31 eV) at a speed of 0.910c. Relativistic effects should be included . What wavelength of light was used to produce...
-
6. Decarburization is the decrease of the carbon content of (the surface of) a steel due to interactions with the environment at elevated temperatures. This will result in a layer on the surface with...
Study smarter with the SolutionInn App