Solve Problem 8.62 assuming that the wedge is to be forced under the machine base at B
Question:
PROBLEM 8.62
A 5° wedge is to be forced under a 1400-lb machine base at A. Knowing that the coefficient of static friction at all surfaces is 0.20,
(a) Determine the force P required to move the wedge,
(b) Indicate whether the machine base will move.
1400 lb P A 50 in 20 in
Step by Step Answer:
See solution to Prob 862 for FBD of machine base and determination of B y 1000 ...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
-
Solve Prob. 8.62 assuming that the wedge is driven under the plank at B instead of at A. Problem 8.62: Bags of grass seed are stored on a wooden plank as shown. To move the plank, a 9° wedge is...
-
Solve Problem 8.62 assuming that the wedge is driven under the plank at B instead of at A.
-
A 10 wedge is to be forced under end B of the 12-lb rod AB. Knowing that the coefficient of static friction is 0.45 between the wedge and the rod and 0.25 between the wedge and the floor, determine...
-
HL Co. uses the high-low method to derive a total cost formula. Using a range of units produced from 1,500 to 7,500, and a range of total costs from $21,000 to $45,000, producing 2,000 units will...
-
(a) What are the principal differences between common stock and preferred stock? (b) Preferred stock may be cumulative. Discuss this feature. (c) How are dividends in arrears presented in the...
-
A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it was found that, for 36 of the sample members, the volume of orders taken this month was higher than...
-
There is some evidence that "young blood" might improve the health, both physically and cognitively, of elderly people (or mice). Exercise 2.69 on page 75 introduces one study in which old mice were...
-
Pierre, a single nonresident alien, conducts a U.S. trade or business for 80 days during the current year. Pierre reports the following income items from his U.S. activities. Indicate how each of...
-
Consider a simple loan. Draw up a table that shows the present value (PV) given the following variables. Show all your calculations. < Present Value (PV) Cash Flow (CF) Interest Rate (i) Term (n)...
-
Construct a rough retirement budget. Adjust the average social security check of $1,422 at 2% inflation until your retirement date. Do the same with your expenses. Determine the difference between...
-
A 5° wedge is to be forced under a 1400-lb machine base at A. Knowing that the coefficient of static friction at all surfaces is 0.20, (a) Determine the force P required to move the wedge, (b)...
-
A 15 wedge is forced under a 50-kg pipe as shown. The coefficient of static friction at all surfaces is 0.20. (a) Show that slipping will occur between the pipe and the vertical wall. (b) Determine...
-
A Carnot engine whose low-temperature reservoir is at -90.0oC has an efficiency of 40.0%. An engineer is assigned the problem of increasing this to 45.0%. (a) By how many Celsius degrees must the...
-
The opening example to this chapter noted that unmanned aircraft systems or drones can be used for a wide range of business or government activities. In 2016, the Federal Aviation Administration...
-
Robert Pierre and Jon LeFranc are assembly line workers employed by Manufacturing Inc., a manufacturing company in Dayton, Ohio. Robert and Jon are good friends as they grew up in the same town in...
-
One possible check on administrative agency power is transparency. What does transparency mean in the context of government regulation? What specific laws and government websites help ensure that...
-
Catastrophe Management Solutions is a customer service support center for insurance companies. In 2010, the company put out a help wanted ad for customer service representatives who had basic...
-
Shirley Jones, a well-known actress and California resident, brought a lawsuit in California court against the president of the National Enquirer newspaper and one of its reporters. The National...
-
Visit the homepages of Maytag Corporation http://www.maytag.com/ and the Whirlpool Corporation http://www.whirlpool.com/, both appliance manufacturers in the United States. Each has some...
-
A crop-dusting plane flies over a level field at a height of 25 ft. If the dust leaves the plane through a 30 angle and hits the ground after the plane travels 75 ft, how wide a strip is dusted? See...
-
In Prob. 15.156, determine (a) The velocity of tip G, (b) The acceleration of tip G. Problem 15.156: In the automated welding setup shown, the position of the two welding tips G and H is controlled...
-
Four pins slide in four separate slots cut in a circular plate as shown. When the plate is at rest, each pin has a velocity directed as shown and of the same constant magnitude u. If each pin...
-
Solve Prob. 15.158, assuming that the plate rotates about O with a constant clockwise angular velocity . Problem 15.158: Four pins slide in four separate slots cut in a circular plate as shown. When...
-
The fact that restrictive covenants are widely used does not mean, as NanoMech, Inc. v. Suresh shows, that they are always enforceable. NanoMech, Inc. v. Suresh 777 F.3d 1020 (8th Cir. 2015) OPINION...
-
What are the fundamental distinctions between prokaryotic organisms and their eukaryotic counterparts, particularly concerning cellular structure and organizational complexity?
-
What are the structural and biochemical features of prokaryotic cell membranes and cell walls, and how do these components contribute to cellular integrity, homeostasis, and environmental...
Study smarter with the SolutionInn App