Two blocks with masses 4.00 kg and 8.00 kg are connected by a string and slide down
Question:
(a) Calculate the acceleration of each block. (b) Calculate the tension in the string. (c) What happens if the positions of the blocks are reversed, so the 4.00-kg block is above the 8.00-kg block?
8.00 kg 4.00 kg 30°
Step by Step Answer:
IDENTIFY Apply F m to each block SET UP Use coordinates where x is directed down the incline EXECUTE ...View the full answer
College Physics Reasoning and Relationships
ISBN: 978-0840058195
2nd edition
Authors: Nicholas Giordano
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 kinetic friction between the tires of your car and the roadway is m. (a) If your initial speed is v and you lock your tires during braking, how far do you skid? Give your answer in...
-
A 50.0-kg block and a 100-kg block are connected by a string as in Figure P8.36. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between the 50.0 kg block and...
-
Two masses m1 and m2 are connected by a string passing through a hollow pipe with m1 being swung around in a circle of radius R and m2 hanging vertically as shown in the figure. Obviously if m1 moves...
-
A 1220-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the drawing,...
-
Determine whether each ordered triple is a solution of the system of equations. (a) (0, 3, 1) (b) (3, 0, 5) (c) (0, 1, 4) (d) (1, 0, 5) ( + z%3D 1 19 4x 3z = 25 2y + 5z = 2
-
Would it be possible for a company to report negative free cash flow and still be highly valued by investors; that is, could a negative free cash flow ever be a good thing in the eyes of investors?...
-
Lois Baiser is the advertising manager for Value Shoe Store. She is currently working on a major promotional campaign. Her ideas include the installation of a new lighting system and increased...
-
Wentworth Co. sold $3,000,000, 7%, 8-year bonds on January 1, 2014. The bonds were dated January 1, 2014, and pay interest on January 1. The company uses straight-line amortization on bond premiums...
-
All of the stock of Hartz and Ryder Corporations is owned by Morgen. Hartz Corporation has been reporting $150,000 of taxable income for each of the past five years. Ryder Corporation has been...
-
1.17 An inductor is to be designed using a magnetic core of the form of that of Fig. 1.29. The core is of uniform cross-sectional area A, = 5.0 cm? and of mean length le = 25 cm. a. Calculate the...
-
A block is placed against the vertical front of a cart as shown in Fig. 5.73. What acceleration must the cart have so that block A does not fall? The coefficient of static friction between the block...
-
Block A with weight 3w, slides down an inclined plane S of slope angle 36.9° at a constant speed while plank B, with weight w, rests on top of A. The plank is attached by a cord to the wall (Fig....
-
Explain how the Black model, which is designed for pricing options on futures contracts, can be used for pricing interest rate options?
-
What kind of culture are the people from the restaurant supply company exhibiting? Give evidence from the case to support your answer.
-
To pay for her college education, Gina is saving $2,000 at the beginning of each year for the next eight years in a bank account paying 12 percent interest. How much will Gina have in that account at...
-
Given: AABC with m/A = 70, BC = 85, AB = 88. Find two possible values for each measure. B a. m/C b. AC Round to the nearest degree, include the degree symbd and give your answers in order from least...
-
ms Anna is a registered nurse at a small rural hospital's Emergency Department. She has been working as a nurse for about 1 year, so she still feels like she has a lot to learn. One night in October,...
-
Specifically, how does machining affect the microstructure of crankshaft? This is what I would likesome understanding with Compare the microstructure ,and the mechanical properties of three kinds of...
-
What minimum information should be presented on the face of the statement of comprehensive income?
-
(a) Prove that form an orthonormal basis for R3 for the usual dot product. (b) Find the coordinates of v = (1, 1, 1)T relative to this basis. (c) Verify formula (5.5) in this particular case. 48-65...
-
An article on bloomberg.com noted that Greeces economy contracted for the first time in two years in the fourth quarter of 2018 as consumption and capital formation both shrank. a. What does the...
-
ity Mode] - Word (Product Activation Failed) cI AaBbCcD AaBbC AaBbCcDd AaBbCcL AaBbCcL AaBbCcL mal Subtitle Title 1 No Spac... Table Pa... Subtle Em... Emphasis Styles UKAF3073 CORPORATE REPORTING...
-
Speedy Auto Repairs uses a job-order costing system. The company's direct materials consist of replacement parts installed in customer vehicles, and its direct labor consists of the mechanics' hourly...
-
Venice InLine, Incorporated, was founded by Russ Perez to produce a specialized in-line skate he had designed for doing aerial tricks. Up to this point, Russ has financed the company with his own...
Study smarter with the SolutionInn App