An 11 kg block of steel is at rest on a horizontal table. The coefficient of static
Question:
(a) What is the magnitude of the horizontal force that will put the block on the verge of moving?
(b) What is the magnitude of a force acting upward 60o from the horizontal that will put the block on the verge of moving?
(c) If the force acts downward at 60o from the horizontal, how large can its magnitude be without causing the block to move?
Step by Step Answer:
a We note that FN mg in this situation so fsmax smg 052 11 kg 98 ms 56 N Consequently the horizontal ...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
-
An 8.00 kg block of steel is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.450. A force is to be applied to the block. To three significant...
-
The coefficient of static friction between Teflon and scrambled eggs is about 0.04. What is the smallest angle from the horizontal that will cause the eggs to slide across the bottom of a...
-
A 3.0-kg block is at rest on a horizontal floor. If you push horizontally on the 3.0-kg block with a force of 12.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A...
-
Which market segments are the most favorable for Hyundai card? Does the company do an effective job of targeting and reaching those segments? If so, How? If not, why not?
-
Determine the cash flow to the woman under an interest-only loan, in which Ponzi will pay the annual interest expense each year and pay the principal back at the end of the contract? Required data:...
-
Why is it important for business students to study finance even if the topic is not their major?
-
Identify the account charged for each of the following: (a) purchase price of a vacant lot to be used in operations and (b) cost of paving that same vacant lot.
-
Chen Chocolate Company's EPS in 2016 was $1.25, and in 2011 it was $0.75. The companys payout ratio is 50%, and the stock is currently valued at $37.75. Flotation costs for new equity will be 15%....
-
Solve the given initial-value problem. dy dx + P(x)y = e*, y(0) = -2, where P(x) = { 1, 0 x < 1 -1, X 1 y(x) = 0 x < 1 X 1
-
Using the following specifications, draw a finite state machine with three states (I, II, and III), five events, and six actions: a. If the machine is in state I, two events can occur. If event 1...
-
A high-speed railway car goes around a flat, horizontal circle of radius 470 m at a constant speed. The magnitudes of the horizontal and vertical components of the force of the car on a 51.0 kg...
-
Calculate the magnitude of the drag force on a missile 53 cm in diameter cruising at 250 m/s at low altitude, where the density of air is 1.2 kg/m 3 . Assume C = 0.75.
-
A burglar broke into Mr. and Mrs. Vales home and stole an oil painting purchased 15 years ago for $89,000. This theft was their only property loss, and their AGI was $125,000. Compute the couples...
-
Joe s friend John purchased an automobile for $ 6 0 , 0 0 0 from a dealer for his personal use and has not taken tax depreciation on that automobile. Two years later, John gives the automobile to Joe...
-
The mean weight of a group of yearling steers is 1179 pounds. Suppose that weights can be described with a normal model with a standard deviation of 85. A) we could subtract 1000 pounds from all...
-
Barter corporation has been buying Product BB in lots of 4 800 units. This number is good for four months supply. The cost per unit is P 300 and the cost per order is P 600. The annual carrying cost...
-
Read this article: https://www.foxnews.com/us/be-honest-are-you-the-office-bully read the article Be Honest: Are You the Office Bully? or copy and paste the following link into your search engine....
-
Part 1: Flexible Budget Performance report Batches Revenues Expenses Direct Materials Revenue and Activity Planning (Static) Formulas Q= Actual Budget 1,600 Selling Variances F/U - $310Q 504,000...
-
Which of the following is a strength of using a natural-language interface to an application system? a. It copes well with the ambiguity and redundancy inherent in natural language b. The lexicon...
-
The Ferris wheel in the figure has a radius of 68 feet. The clearance between the wheel and the ground is 14 feet. The rectangular coordinate system shown has its origin on the ground directly below...
-
A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0 above the horizontal. It strikes a target above the ground 3.00 seconds later. What are the x and y...
-
For the thermal radiation from an ideal blackbody radiator with a surface temperature of 2000 K, let Ic represent the intensity per unit wavelength according to the classical expression for the...
-
Assuming that your surface temperature is 98.6F and that you are an ideal blackbody radiator (you are close), find (a) The wavelength at which your spectral radiancy is maximum, (b) The power at...
-
The smallest dimension (resolving power) that can be resolved by an electron microscope is equal to the de Broglie wavelength of its electrons. What accelerating voltage would be required for the...
-
Transaction 3 A one-year store rental lease was signed on March 1 for $1,100 per month, and rent for the first 2 months was paid in advance. [Note: Record the complete entry for the March 1...
-
Production Report, Weighted Average Mino Inc. manufactures chocolate syrup in three departments: Cooking, Mixing, and Bottling. Mino uses the weighted average method. The following are cost and...
-
A table for a monthly bank reconciliation dated September 30 is given below. For each item 1 through 12, indicate whether the item should be added to or subtracted from the book or bank balance, and...
Study smarter with the SolutionInn App