In Figure, a 1400 kg block of granite is pulled up an incline at a constant speed
Question:
In Figure, a 1400 kg block of granite is pulled up an incline at a constant speed of 1.34 m/s by a cable and winch. The indicated distances are d1 = 40 m and d2 = 30 m. The coefficient of kinetic friction between the block and the incline is 0.40. What is the power due to the force applied to the block by thecable?
dy -d-
Step by Step Answer:
We note that in one second the block slides d 134 m up the incline which means its height ...View the full answer
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
-
In Figure, a 1400kg clock kg block of granite is pulled up an incline at a constant speed of 1.34 m/s by a cable and winch. The indicated distances are d 1 = 40 m and d 2 = 30 m. The coefficient of...
-
In Figure the coefficient of kinetic friction between the block and inclined plane is 0.20, and angle ? is 60o. What are the(a) Magnitude a and(b) Direction (up or down the plane) of the block's...
-
A roller coaster is towed up an incline at a steady speed of 0.50 m/s by a chain parallel to the surface of the incline. The slope is 3.0%, which means that the elevation increases by 3.0 m for every...
-
The data below provides weekly sales for the past 12 weeks (weeks 21-32). Week Sales 21 4,000 22 3,655 23 3,958 24 3,983 25 4,538 26 4,120 27 4,692 28 4,421 29 4,859 30 5,030 31 5,540 32 5,670 Use a...
-
Upland Limited borrowed $40,000 on November 1, 2017 by signing a $40,000, three-month, 9% note. Prepare Upland's November 1, 2017 entry; the December 31, 2017 annual adjusting entry; and the February...
-
How would your answers change in Example 14-3 if you had a 5050 mixture of hydrazine and helium? If you increase d p by a factor of 5? Example 14-3 There is a 100 micron carbon dust particle in air...
-
Begin with the \(A R(1)\) model as in equation (8.1). a. Take variances of each side of equation (8.1) to show that \(\sigma_{y}^{2}\left(1-\beta_{1}^{2} ight)=\) \(\sigma^{2}\), where...
-
In addition to the basic consumer rights expressed in the consumers Magna Carta, what other expectations do you think consumer stakeholders have of business?
-
Evaluate the definite integral (11 sin a) da exactly, using the Fundamental Theorem, then evaluate the same integral approximately. NOTE: Round the approximate value to three decimal places. Example:...
-
The circuit in Fig. 32-31 consists of switch S, a 12.0 V ideal battery, a 20.0 M resistor, and an air-filled capacitor. The capacitor has parallel circular plates of radius 5.00 cm, separated by 3.00...
-
A spring (k = 200 N/m) is fixed at the top of a frictionless plane inclined at angle = 40 (Figure). A 1.0 kg block is projected up the plane, from an initial position that is distance d = 0.60 m...
-
A massless rigid rod of length L has a ball of mass m attached to one end (Figure). The other end is pivoted in such a way that the ball will move in a vertical circle. First, assume that there is no...
-
A formula for a chemical compound is not a trade secret. (True/False)
-
Probability sampling assumes that every unit in the population has a positive chance of being selected in the sample, and that this probability can be accurately determined. Some types of probability...
-
Find the cumulative distribution, the mean, median, and mode for each of the tables in Problems 5-10. A store orders tubes of glue in the proportions shown in the following table. Size (oz) 2 268 6 8...
-
Comment on the following quotation: "I just received my SAT scores and I scored in the 78th percentile in English, and 50th percentile in math."
-
Find the cumulative distribution, the mean, median, and mode for each of the tables in Problems 5-10. The table shows the distribution of the number of motor vehicles per household. No. of Motor...
-
Prepare a report or exhibit showing how statistics are used in baseball.
-
Describe various models of decision making.
-
The following T-accounts show postings of selected transactions. Indicate the journal used in recording each of these postings a through e. Cash Accounts Receivable Inventory (d) 500 (e) 300 (b)...
-
In Problems 5562, find the particular antiderivative of each derivative that satisfies the given condition. dx dt =4e 2; x(0) = 1 -
-
An electric vehicle starts from rest and accelerates at a rate of 2.0m/s 2 in a straight line until it reaches a speed of 20m/s.The vehicle then slows at a constant rate of 1.0 m/s 2 until it stops....
-
A world's land speed record was set by Colonel John P. Stapp when in March 1954 he rode a rocket-propelled sled that moved along a track at 1020 km/h. He and the sled were brought to a stop in 1.4 s....
-
The x component of vector A is 25.0m and the y component is + 40.0m. (a) What is the magnitude of A? (b) What is the angle between the direction of a and the positive direction of x?
-
Consider a plane of mass 50,000 kg in takeoff when the thrust for each of its four engines is 25,000 N. If the plane is facing an air drag force of 10,000 N; What is the acceleration of the plane?
-
Discuss the rationale and ways in which developers are regulated in relation to the acquisition and development of land in Singapore.
-
Interview an individual who has a chronic illness. With the individual's permission, interview them about what it is like to live with a chronic illness, the most difficult parts of being chronically...
Study smarter with the SolutionInn App