A slide-loving pig slides down a certain 35 o slide in twice the time it would take
Question:
A slide-loving pig slides down a certain 35o slide in twice the time it would take to slide down a frictionless 35o slide. What is the coefficient of kinetic friction between the pig and the slide?
Step by Step Answer:
We first analyze the forces on the pig of mass m The incline angle i...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
-
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...
-
The coefficient of kinetic friction between the 2.0 kg block in FIGURE P7.38 and the table is 0.30. What is the acceleration of the 2.0 kg block? 2.0 kg 3.0 kg 1.0 kg FIGURE P7.38
-
The coefficient of kinetic friction between the surface and the larger block is 0.20, and the coefficient of kinetic friction between the surface and the smaller block is 0.30. If F = 14 N and M =...
-
1. As shown by point D in Fig 3.1, the volume of an ideal diatomic gas is 2.00L at standard condition (STP, T=273.15K, P=101.3kPa). The gas is heated to A with its volume conserved, expands...
-
California Cement Company anticipates the following fourth-quarter sales for 2014: $1,800,000 (October), $1,600,000 (November), and $2,100,000 (December).It posted the following sales figures for the...
-
The following discussion pertains to the pricing policies of Linear Technology Corp.: Linear made a 39% profit on its $1.1 billion sales in 2006, more than five times the average for U.S. industrial...
-
What is the added worker effect? What is the discouraged worker effect?
-
Kowalski Company manufactures a number of specialized machine parts. Part Compo-24 uses $35 of direct materials and $15 of direct labor per unit. Kowalskis estimated manufacturing overhead is as...
-
10. From the following information prepare marginal costing statement and calculate BEP and PVR Fixed cost Ro 120000 Variable cost RO 200000 Sales RO 1000000 Direct wages RO 150000 Direct materials...
-
A manufacturer has two different factories that produce three grades of steel: structural steel, rail steel, and pipe steel. They must produce 32 tons of structural, 26 tons of rail, and 30 tons of...
-
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.25 with the floor. If the train is initially moving at a speed of 48 km/h, in how short a...
-
A 3.5 kg block is pushed along a horizontal floor by a force F of magnitude 15 N at an angle = 40 o with the horizontal (Figure). The coefficient of kinetic friction between the block and the floor...
-
Currently, a company has 50,000 units of safety stock for a product located in three warehouses. The company is contemplating expanding to nine warehouses. The company believes that this increased...
-
Air flows from a large reservoir where the pressure and temperature are 200 kPa, 300K respectively, through a pipe of diameter 0.05m and exhausts into the atmosphere at 100 kPa. Heat is added to the...
-
An electromagnetic wave has an average Poynting vector magnitude of \(4 \times 10^{-7} \mathrm{~W} / \mathrm{m}^{2}\). What is the maximum value of the magnitude of the electric field?
-
For each of the following sets of data, (1) calculate the mean of the scores \(\left(\mathrm{X}^{-} ight),(2)\) calculate the deviation of each score from the mean \(\mathrm{X}-\mathrm{X}^{-}\), and...
-
A 25-km, 34.5-kV, 60-Hz three-phase line has a positive-sequence series impedance z = 0:19 j0:34 W/km. The load at the receiving end absorbs 10 VA at 33 kV. Assuming a short line, calculate: (a)...
-
The term emf (electromotive force) represents work done per unit charge. Why, then, is it termed erroneously as "force" (or electromotive force)?
-
Test whether \(p_{1} > p_{2}\). Sample data: \(x_{1}=28, n_{1}=254\), \(x_{2}=36, n_{2}=301\), where \(\alpha=0.05\). Conduct each test at the \(\alpha\) level of significance by determining (a) the...
-
The following selected accounts and normal balances existed at year-end. Notice that expenses exceed revenue in this period. Make the four journal entries required to close the books: Accounts...
-
Solve part (b) of Example 6.6 using a c = v 2 /r. Data given in Example 6.6 (a) Find the acceleration due to Earths gravity at the distance of the Moon. (b) Calculate the centripetal acceleration...
-
78 More lenses. Object O stands on the central axis of a thin symmetric lens. For this situation, each problem in Table 34-8 refers to (a) The lens type, converging (C) or diverging (D), (b) The...
-
78 More lenses. Object O stands on the central axis of a thin symmetric lens. For this situation, each problem in Table 34-8 refers to (a) The lens type, converging (C) or diverging (D), (b) The...
-
78 More lenses. Object O stands on the central axis of a thin symmetric lens. For this situation, each problem in Table 34-8 refers to (a) The lens type, converging (C) or diverging (D), (b) The...
-
Use factoring by grouping to solve the following equation. 3-522-16r+80=0 Enter the solutions, separated by commas if necessary. Do not use a plus-minus () sign when entering separate answers....
-
What are some intervention policies that make provisions for destitute college or university students in Ethiopia? Please provide Examples
-
Develop a simple application of two- variable linear programming problem to find an optimal product mix in a 'realistic' context. Specify the resources to be considered requirements, and the market...
Study smarter with the SolutionInn App