The flat-bed trailer carries two 1500-kg beams with the upper beam secured by a cable. The coefficients
Question:
The flat-bed trailer carries two 1500-kg beams with the upper beam secured by a cable. The coefficients of static friction between the two beams and between the lower beam and the bed of the trailer are 0.25 and 0.30, respectively. Knowing that the load does not shift, determine
(a) The maximum acceleration of the trailer and the corresponding tension in the cable,
(b) The maximum deceleration of the trailer.
Step by Step Answer:
a Maximum acceleration The cable secures the upper beam to the ca...View the full answer
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073398242
11th edition
Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self
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 flat-bed trailer carries two 3000-lb beams with the upper beam secured by a cable. The coefficients of static friction between the two beams and between the lower beam and the bed of the trailer...
-
The 80-kg man tries to lower the 150-kg crate using a rope that passes over the rough peg. Determine the least number of full turns in addition to the basic wrap (165?) around the peg to do the job....
-
The winch on the truck is used to hoist the garbage bin onto the bed of the truck. If the loaded bin has weight W and center of gravity at G, determine the force in the cable needed to begin the...
-
According to the Statute of Frauds, in order to be legally enforceable, a contract must be in writing, name the contracting parties, identify the subject matter of the contract, and Be for a legal...
-
The bookkeeper for Bullwinkle Corporation made these errors in journalizing and posting.1. A credit posting of $400 to Accounts Receivable was omitted.2. A debit posting of $750 for Prepaid Insurance...
-
Mason Paper Company (MPC) manufactures large quantities of standard white 8 11 inch paper for use in computer printers and photocopiers. MPC has reported operating losses for the last two years due...
-
Consider the automobile gasoline mileage data in Table B.3. a. Build a linear regression model relating gasoline mileage \(y\) to engine displacement \(x_{1}\) and the type of transmission...
-
On January 1, 2011, Burleson Corporation's projected benefit obligation was $30 million. During 2011 pension benefits paid by the trustee were $4 million. Service cost for 2011 is $12 million....
-
Lamar has the following data: Selling price $ 40 Variable manufacturing cost $ 22 $165,000 per month Fixed manufacturing cost Variable selling & administrative costs $ 6 Fixed selling &...
-
A 16-run fractional factorial experiment in 10 factors on sand-casting of engine manifolds was conducted by engineers at the Essex Aluminum Plant of the Ford Motor Company and described in the...
-
The value of g at any latitude ( may be obtained from the formula g = 32.09 (1 + 0.0053 sin2 () ft/s2 Which takes into account the effect of the rotation of the earth, as well as the fact that the...
-
A baggage conveyor is used to unload luggage from an airplane. The 10-kg duffel bag A is sitting on top of the 20-kg suitcase B. The conveyor is moving the bags down at a constant speed of 0.5 m/s...
-
Graph f(x) = 2 x and g(x) = log 2 x in the same rectangular coordinate system. Use the graphs to determine each functions domain and range.
-
Draw a graph of the relationship between the revenue per theater on the y-axis and the number of theaters on the x-axis. Describe the relationship. Use the following news clip to work Problems 4 to...
-
Graph the lines, curves, or half-planes in Problems 1-12. \(y=-2^{x}\)
-
Write a filter KamasutraCipher that takes two strings as command-line argument (the key strings), then reads strings (separated by whitespace) from standard input, substitutes for each letter as...
-
Two parallel-plate capacitors have the same dimensions, but the space between the plates is filled with air in capacitor 1 and with plastic in capacitor 2 . The potential difference between the...
-
A finance student states, I dont understand why anyone pays any attention to accounting profits, given that a clean number like cash from operations is readily available. Do you agree? Why or why not?
-
Go to the Web site for The United States Patent and Trademark Office. This site will provide information on how the office classifies information, facts about international intellectual property, and...
-
A simple random sample of 220 university students were asked what pasta they usually order and with which sauce. The preferences of these respondents are summarised below: Sauce Bolognese Pasta...
-
The 2-lb gear A is constrained to roll on the fixed gear B, but is free to rotate about axle AD. Axle AD, of length 20 in. and negligible weight, is connected by a clevis to the vertical shaft DE...
-
Determine the force F exerted by gear B on gear A of Prob. 18.87 when shaft DE rotates with the constant angular velocity w1 = 4rad/s. and D 30 I. 20 in r-4 km.
-
The slender rod AB is attached by a clevis to arm BCD which rotates with a constant angular velocity about the centerline of its vertical portion CD. Determine the magnitude of the angular velocity...
-
Reflecting on the book Who Gets Promoted, Who Doesn't, and Why (Asher, 2008), answer the following questions in depth. Explain the statement, "all business is sales." What six things matter? If...
-
Reflecting on the book Who Gets Promoted, Who Doesn't, and Why (Asher, 2008), answer the following questions in depth. No matter what you have done in the past, the boss really doesn't care. Why?...
-
Do you think Richard Scrushy should have been found guilty or acquitted for his role in the case against HealthSouth? https://www.wsj.com/articles/SB111702610398942860
Study smarter with the SolutionInn App