A rear-wheel-drive car supports 40% of its weight on its two drive wheels and has a coefficient
Question:
A rear-wheel-drive car supports 40% of its weight on its two drive wheels and has a coefficient of static friction of 0.7.
(i). What is the vehicle’s maximum acceleration?
(ii). Compute the shortest possible time in which this car can achieve a speed of 100 km/h?
Step by Step Answer:
Draw the freebody diagram f smax ...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 rear wheel drive 13.3 KN drag race car has a 5.10m wheel base and a centre of gravity 500 mm above the pavement and 3.55m behind the front axle. the owners wish to achieve an initial acceleration...
-
A 21-speed bicycle has seven sprockets at the rear wheel and three at the pedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why? In which gear is it...
-
A 16° wedge A of negligible weight is placed between two 175-lb blocks B and C which are at rest on inclined surfaces as shown. The coefficient of static friction is 0.40 between both the wedge...
-
Consider the following scenario. Each day, a butcher buys a 200-kilogram pig for $360. The pig can be processed to yield the following three products: Day 1 The butcher buys a pig. The $360 joint...
-
Which part of an atom is positively charged, and which part is negatively charged?
-
Review thecompletedC corporation, partnership, and S corporation tax returnspresented inAppendixB. List three major tax reporting similarities and three major tax reporting differences in either...
-
Haupt Consulting, Inc., completed the following transactions during the first half of December, 2010: Requirements 1. Open T-accounts in the ledger: Cash, Accounts receivable, Supplies, Equipment,...
-
Income tax allocation is an integral part of GAAP. The applications of intraperiod income tax allocation (within a period) and interperiod tax allocation (among periods) are both required. Required:...
-
expedia provides travel services on the Internet. In the first quarter of 2019, Texpedia reported an operating income of $4 million on sales revenue of $60 million. In the second quarter of 2019,...
-
Faubert failed to accrue $10,000 of Interest Revenue for interest earned in Year 2. Revenue was recorded when the cash collection was received in Year 3.
-
A block of mass m slides with initial speed v 0 on a horizontal surface. If the coefficient of kinetic friction between the block and the surface is k , find the distance d that the block moves...
-
Lou bets an innocent stranger that he can place a 2-kg block against the side of a cart, as in Figure, and that the block will not fall to the ground, even though Lou will use no hooks, ropes,...
-
Write a balanced equation for the formation of urea, (NH2)2CO, from carbon dioxide and ammonia. Should the reaction be run at a high or low pressure to maximize the yield?
-
How does a continuous system differ from a discrete system in the nature of its equation of motion?
-
Identify and indicate the major components of each phase of an auditor's consideration of internal control.
-
True or False. Continuous systems are the same as distributed systems.
-
Explain how creating a process map and internal threat analysis helps in determining the extent to which substantive testing is to be performed on the accounts associated with the marketing, sales,...
-
What is an auditor's objective when obtaining an understanding of an entity's information system?
-
In the last two exercises the objective has been that of minimizing weight. There are many others. In the selection of a material for a spring, the objective is that of maximizing the elastic energy...
-
Using (1) or (2), find L(f) if f(t) if equals: t cos 4t
-
The K f for [Cu(en) 2 ] 2+ is much larger than the one for [Cu(NH3) 4 ] 2+ . This difference is primarily an entropy effect. Explain why and calculate the difference between the S values at 298 K for...
-
A time-dependent force, F = (8.00i 4.00tj) N, where t is in seconds, is exerted on a 2.00-kg object initially at rest. (a) At what time will the object be moving with a speed of 15.0 m/s? (b) How far...
-
To prevent a box from sliding down an inclined plane, student A pushes on the box in the direction parallel to the incline, just hard enough to hold the box stationary. In an identical situation...
-
Three blocks are in contact with each other on a frictionless, horizontal surface, as in Figure P5.54. A horizontal force F is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 4.00 kg, and F =...
-
Georgeland Cycles makes and sells two models of electric bicycles. The Commuter (a folding model) sells for $2,505.00 and the Tour- X (a fat-tire trail model) sells for $4,505.00. Unit variable costs...
-
How do resistance genes alter the effectiveness of antibiotics that target proteins ?
-
Able Co. received $20,000 from a customer on April 1 for services to be provided partially in April and the rest in May. At the end of April, 11% of the services were complete. What is the amount...
Study smarter with the SolutionInn App