Figure shows a cord attached to a cart that can slide along a frictionless horizontal rail aligned
Question:
Figure shows a cord attached to a cart that can slide along a frictionless horizontal rail aligned along an x axis. The left end of the cord is pulled over a pulley, of negligible mass and friction and at cord height h = 1.20 m, so the cart slides from x1 = 3.00 m to x2 = 1.00 m. During the move, the tension in the cord is a constant 25.0 N. What is the change in the kinetic energy of the cart during themove?
X)
Step by Step Answer:
We solve the problem using the workkinetic energy theorem which states that the ch...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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 monatomic gas fills the left end of the cylinder in Figure CP19.82. At 300 K, the gas cylinder length is 10.0 cm and the spring is compressed by 2.0 cm. How much heat energy must be added to the...
-
The left end of a long glass rod 6.00cm in diameter has a convex hemispherical surface 3.00cm in radius. The refractive index of the glass is 1.60. Determine the position of the image if an object is...
-
The left end of a long glass rod 8.00cm in diameter, with an index of refraction 1.60, is ground and polished to a convex hemispherical surface with a radius of 4.00cm. An object in the form of an...
-
The top ten fiction books on The New York Times Best Sellers List on October 9, 2016, are listed. 1. The Girl on the Train 2. Home 3. The Kept Woman 4. Magic Binds 5. Commonwealth 6. The Light...
-
Why did Lehman Brothers experience financial problems during the credit crisis?
-
You are a financial analyst for Damon Electronics Company. The director of capital budgeting has asked you to analyze two proposed capital investments, Projects X and Y. Each project has a cost of...
-
Describe the advantages and disadvantages of microlenders that are privately owned relative to cooperatives.
-
Gilbert Moss and Angela Pasaic spent several summers during their college years working at archaeological sites in the Southwest. While at those digs, they learned how to make ceramic tiles from...
-
Question 6 of 29 (1 point) | Attempt 1 of 1 | 3h 26m Remaining Write the statement in words. Let p = "The plane is on time." Let q= "The sky is clear." q-p Choose the correct statement in words....
-
Given MA wheel-and-axle = rE / rR, find each missingquantity. MA TR 119 mm -_in 49.2 cm 31.7 cm 61.3 cm 67.4 mm 29.7 mm 6. 7.00 7. 4.00 mim 12.2 in. 9. 3.00 10. cmm
-
A force F = (cx 3.00x2)i acts on a particle as the particle moves along an x axis, with F in Newtons, x in meters, and c a constant. At x = 0, the particle's kinetic energy is 20.0 J; at x = 3.00 m,...
-
A 100 kg block is pulled at a constant speed of 5.0 m/s across a horizontal floor by an applied force of 122 N directed 37o above the horizontal. What is the rate at which the force does work on the...
-
Evaluate each of the following. (1 0.7) 4 20 5
-
Steve and Tony Sherwoodlast year decided to branch into the production of portable record players, whichHexagon assembles from imported components. There are currently two models of record player...
-
On January 29, 2010, a group comprised of residents of, and visitors to, New York City Housing Authority (NYCHA) residences filed a class action lawsuit against NYCHA and the City of New York. The...
-
How do you create a brief using these cases: Derby v. Derby , 378 S.E.2d 74 (Va. Ct. App. 1989). Galloway c. Galloway , 622 S.E.2d 267 (Va. Ct. App. 2005). Sims v. Sims , 55 Va. App. 340 (2009)....
-
Use lagrange multipliers to find extreme values of the function subject to given constraint f(x, y) = xye+y, 2x - y = 0
-
1. The First Amendment clearly prohibits any restrictions on the freedom of speech. Does this mean that in the US we have absolute freedom of speech? 2. Read through/review the US Supreme Court's...
-
Why is customer education such a critical control in the use of plastic cards in an electronic funds transfer system?
-
What is the back work ratio? What are typical back work ratio values for gas-turbine engines?
-
In relation to the new manufacturing costing system, describe two automated application controls that MaxSecurity could be using. MaxSecurity Limited (MaxSecurity) has been an audit client of Smith &...
-
A 475-kg prestressed concrete beam is to be raised 10.0 m in 24.0 s. How many kilowatts of power are needed for the job?
-
A 50.0-kg welder is to be raised 15.0 m in 12.0 s. How many kilowatts of power are needed for the job?
-
An escalator is needed to carry 75 passengers per minute a vertical distance of 8.0 m. Assume that the mass of each passenger is 70 kg. (a) What is the power (in kW) of the motor needed? (b) Express...
-
Louis files as a single taxpayer. In April of this year he received a $910 refund of state income taxes that he paid last year. How much of the refund, if any, must Louis include in gross income...
-
6 Lester and Forrest Scruggs have presented you with the following information for Scruggs, Inc. For 2021 they would like for you to 7 complete a(n) 1 adjusted Trial Balance (prepare this on a...
-
A small departmental store buys and sells products from various companies. They buy some of the products at discounted prices when they order large numbers. They sell all their products 20% above the...
Study smarter with the SolutionInn App