A curve of radius 30 m is banked so that a 950- kg car traveling 40 km/h
Question:
A curve of radius 30 m is banked so that a 950- kg car traveling 40 km/h can round it even if the road is so icy that the coefficient of static friction is approximately zero. Find the range of speeds at which a car can travel around this curve without skidding if the coefficient of static friction between the road and the tires is 0.3.
Step by Step Answer:
This problem is similar to the preceding problem and we shall use the freebody d...View the full answer
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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 curve of radius 150 m is banked at an angle of 10. An 800-kg car negotiates the curve at 85 km/h without skidding. Find (a) The normal force on the tires exerted by the pavement, (b) The frictional...
-
A 1200-kg car rounds a curve of radius 67m banked at an angle of 12o. If the car is traveling at 95km/g, will a friction force be required If so, how much and in what direction?
-
A curve of radius 67m is banked for a design speed of 95km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely handle the curve?
-
Recall the rural medical clinics in Example 8.3 and suppose that each community were required to be 25 miles at most from the nearest clinic. How many clinics would be needed, and what would their...
-
At the atomic level, what is meant by saying that something is electrically charged?
-
Suntrek, based in China, is a global supplier of denim jeans for apparel companies around the world. It purchases baled raw cotton from producers in the United States and then transports it to East...
-
a. What are the basic similarities and differences between administrative control and accounting control? b. What is the relationship between the two types of controls?
-
Develop a resource schedule in the loading chart that follows. Use the parallel method and heuristics given. Be sure to update each period as the computer would do. Note: activities 2, 3, 5, and 6...
-
The following information is available for Market, Incorporated and Supply, Incorporated at December 31: Accounts Accounts receivable Allowance for doubtful accounts Sales revenue Market,...
-
In chronological order, the inventory, purchases, and sales of a single product for a recent month are as follows. 1. Using the periodic inventory system, compute the cost of ending inventory , cost...
-
A civil engineer is asked to design a curved section of roadway that meets the following conditions: With ice on the road, when the coefficient of static friction between the road and rubber is 0.08,...
-
How would you expect the value of b for air resistance to depend on the density of air?
-
What is a security policy? A. A document with a rigid set of rules created so that people follow it explicitly to be effective and avoid technical problems B. A technical control used to enforce...
-
Find the area under the curves in Problems 33-40 on the given intervals. \(y=4 x\) on \([2,4] \)
-
Find the average and instantaneous rates of change of the functions in Problems 33-36. \(f(x)=3 x^{2}\) a. average for \(x=1\) to \(x=3 \) b. instantaneous at \(x=1\)
-
Find the average and instantaneous rates of change of the functions in Problems 33-36. \(f(x)=5\) a. average for \(x=-3\) to \(x=3\) b. instantaneous at \(x=-3\)
-
In Problems 21-38, guess the requested limits. \(\lim _{n ightarrow \infty} \frac{3 n^{2}+1}{2 n^{2}-1}\)
-
Find the area under the curves in Problems 33-40 on the given intervals. \(y=x^{2}\) on \([1,9]\)
-
In researching the forces that act on flying birds, scientists studied the motion of cockatiels bodies as they fly in horizontal flight. As the birds beat their wings, their bodies move up and down....
-
(a) Use integration by parts to show that (b) If f and g are inverse functions and f' is continuous, prove that (c) In the case where f and t are positive functions and b > a > 0, draw a diagram to...
-
If W, X, Y, and Z are different monodentate ligands, how many geometric isomers are there for each ion? a. square planar [NiWXYZ]+ b. tetrahedral [ZnWXYZ]2+
-
A tire 0.500 m in radius rotates at a constant rate of 200 rev/min, find the speed and acceleration of a small stone lodged in the tread of the tire (on its outer edge).
-
The head of a grass string trimmer has 100 g of cord wound in a light cylindrical spool with inside diameter 3.00 cm and outside diameter 18.0 cm, as in Figure P10.50. The cord has a linear density...
-
As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2.In their training, astronauts ride in a device where they experience such an...
-
10.21 Estimate the hydrogen-burning lifetimes of stars near the lower and upper ends of the main sequence. The lower end of the main sequence 2 occurs near 0.072 Mo, with log10 Te = 3.23 and log 10...
-
A force at = 4.00 N - 3.00 N is applied to an object at position = 2.00 mi + 3.00 mi. What is the torque about the origin?
-
Using the above graph G, answer the following questions. 1. Is Ga DAG? 2. What are the strongly connected components of G? 3. Give a valid topological ordering of the nodes. 4. Is this the only valid...
Study smarter with the SolutionInn App