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?
-
Dontae stated that he didn't want to earn any more money because it would "put him in a higher tax bracket." What is wrong with Dontae's reasoning?
-
Discuss the rights and responsibilities of unions and management.
-
Jason, Kelly, and Becky, who share partnership profits 50 percent, 30 percent, and 20 percent, respectively, decide to liquidate their partnership. They need the cash from the partnership as soon as...
-
What is the total cash collection for April? Q1- the following is information of Royal Company for the quarter ending June 30th Sales budgets for the next four months are: April May June Budget sales...
-
Today is September 16, Year 2. You, CPA, work for Garcia & Garcia LLP, a medium-sized firm located in Montreal. Jules Garcia calls you into his office. "CPA, I have a very special engagement for you....
-
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...
-
On November 2, 20Y3, Fibrosis Co. purchased $1,800 of supplies on account. a. Journalize the November 2, 20Y3, transaction. b. Prepare a T account for Supplies. Enter a debit balance of $1,050 as of...
-
A nonlinear model is given. a. Obtain the linear state-space form in Simulink. b. Derive the linearized model analytically to confirm the result of (a). \(\ddot{x}+\dot{x}^{3}+x=u(t), \quad u(t)=\)...
-
The mathematical model of a nonlinear system is provided. Using the procedure outlined in this section, find the operating point and derive the linearized model. \(\begin{cases}\dot{x}_{1}=x_{2} &...
-
The mathematical model of a nonlinear system is provided. Using the procedure outlined in this section, find the operating point and derive the linearized model....
-
The mathematical model of a nonlinear system is provided. Using the procedure outlined in this section, find the operating point and derive the linearized model. \(\frac{1}{3}...
-
The mathematical model of a nonlinear system is provided. Using the procedure outlined in this section, find the operating point and derive the linearized model. \(\ddot{x}+\frac{2}{3}...
-
Find the inverse of the matrix. \(\mathbf{A}=\left[\begin{array}{cc}-L_{1} \sin \theta_{1}-L_{2} \sin \left(\theta_{1}+\theta_{2} ight) & -L_{2} \sin \left(\theta_{1}+\theta_{2} ight) \\ L_{1} \cos...
-
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...
-
The cumulative incidence of myocardial infarction is 180.0 new cases per 10,000 persons among individuals with severe hypertension. In contrast, the cumulative incidence of myocardial infarction is...
-
Rundle Industries produces two electronic decoders, P and Q. Decoder P is more sophisticated and requires more programming and testing than does Decoder Q. Because of these product differences, the...
-
What financial statement, which can be reported with or separate from the income statement, includes income-related items that affect the balance sheet but are not included in net income?
Study smarter with the SolutionInn App