A toy cart of mass m1 moves on frictionless wheels as it is pulled by a string
Question:
(a) A horizontal surface;
(b) Up a ramp of angle θ above the horizontal. In both cases, the string is parallel to the surface on which the cart rolls.
Step by Step Answer:
Use Newtons second law Let T be the maximum tension ...View the full answer
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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
-
As an extension of Ex. 3.10, let the plate and cart be unrestrained, with frictionless wheels. Derive (a) the equation of motion for cart velocity Vc (t); and (b) the time required for the cart to...
-
Ann (mass 50 kg) is standing at the left end of a 15-m-long, 500 kg cart that has frictionless wheels and rolls on a frictionless track. Initially both Ann and the cart are at rest. Suddenly, Ann...
-
An object of mass m1 = 9.00 kg is in equilibrium while connected to a light spring of constant k = 100 N/m that is fastened to a wall as shown in Figure P15.52a. A second object, m2 = 7.00 kg, is...
-
Suppose that a typical taxpayer has a marginal personal income tax rate of 35 percent. The nominal interest rate is 13 percent, and the expected inflation rate is 8 percent. a. What is the real...
-
Oregon Exchange Company completed the following long-term investment transactions during 2010: 2010 May 12 Purchased 17,500 shares, which make up 30% of the common stock of Woburn Corporation at...
-
Discuss how to select, recruit, and orient employees.
-
(e) Obtain the unadjusted mean and the shrunk mean, and the BLUP, for the number of days from sowing to flowering in each family.
-
Dalton Industries, Inc., has two major operating divisions, the Furniture Division and the Electronics Division. The company's main product is a deluxe entertainment center. The centers' components...
-
Abercrombie and Fitch is a leading retailer of casual apparel for men, women, and children. Assume that you are employed as a stock analyst and your boss has just completed a review of the new...
-
Find the Laplace transform F(s), given that f(t) is: (a) 2tu(t 4) (b) 5cos(t) (t 2) (c) etu(t t) (d) sin(2t)u(t )
-
A crate of books is to be put on a truck by rolling it up an incline of angle using a dolly. The total mass of the crate and the dolly is m. Assume that rolling the dolly up the incline is the same...
-
A helicopter of mass M is lowering a truck of mass m onto the deck of a ship. (a) At first, the helicopter and the truck move downward together (the length of the cable doesn't change). If their...
-
Darmor Ltd has three products which require the same production facilities. Information about their per unit production costs are as follows: All labour and materials are variable costs. Skilled...
-
In this scenario you are the Manager of a Home and Community Care organization in Victoria. Your organization provides oversees support services for individuals in their homes. The individuals that...
-
find the wind speed and direction for the following parcels. Important note: To determine the arc tangent using the Google calculator, click the box marked "Inv" so that it is a light gray instead of...
-
As consumers we're connected to an instant feed or live updates, breaking news, and messages. We believe that when we post something on social media, we will get instant feedback from friends. What...
-
Describe the process for screening candidates for ethics. Outline which job candidate factors are illegal to consider when hiring. Explain how to obtain accurate behavior information from resumes,...
-
In relation to Operation management, sustainability and supply chain management explain the following terms; What is the overall objective of scheduling? What is JIT? What is a Lean producer? Discuss...
-
What is the half-life of a radioisotope if it decays to 12.5% of its radioactivity in 12 years?
-
The rate at which the temperature of an object changes is proportional to the difference between its own temperature and the temperature of the surrounding medium. Express this rate as a function of...
-
Two skaters, one with mass 65 kg and the other with mass 40 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves...
-
A stone is dropped at t - 0. A second stone, with twice the mass of the first, is dropped from the same point at t = 100ms. (a) How far below the release point is the center of mass of the two stones...
-
A 1000 kg automobile is at rest at a traffic signal. At the instant the light turns green, the automobile starts to move with a constant acceleration of 4.0m/s2. At the same instant a 2000 kg truck,...
-
Suppose you bought a bon with an annual coupon rate of 6.5 percent one year ago for $1,032. The bond sells for $1,020 today. a. Assuming a $1,000 face value, what was your total dollar return on this...
-
During the year 2021, William has a job as an accountant, he earns a salary of $100,000. He has done some cleaning services work on his own (self-employed), where he earned a net income of $50,000....
-
Fixed cost per unit is $7 when 25,000 units are produced and $5 when 35,000 units are produced. What is the total fixed cost when 30,000 units are produced? Group of answer choices $150,000....
Study smarter with the SolutionInn App