Before 1960, people believed that the maximum attainable coefficient of static friction for an automobile tire on a roadway was , 1. Around 1962, three companies independently developed racing tires with coefficients of 1.6. This problem shows that tires have improved further since then. The shortest time interval in which a piston-engine car initially at rest has covered a distance of one-quarter mile is about 4.43 s. التمن - Ⓡ (a) Assume the car's rear wheels lift the front wheels off the pavement as shown in the figure above. What minimum value of u, is necessary to achieve the record time? (b) Suppose the driver were able to increase his or her engine power, keeping other things equal. How would this change affect the elapsed time?

Before 1960, people believed that the maximum attainable coefficient of static friction for an automobile tire on a roadway was , 1. Around 1962, three companies independently developed racing tires with coefficients of 1.6. This problem shows that tires have improved further since then. The shortest time interval in which a piston-engine car initially at rest has covered a distance of one-quarter mile is about 4.43 s. التمن - Ⓡ (a) Assume the car's rear wheels lift the front wheels off the pavement as shown in the figure above. What minimum value of u, is necessary to achieve the record time? (b) Suppose the driver were able to increase his or her engine power, keeping other things equal. How would this change affect the elapsed time?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book…

A: mass of the book (m) = 731 grams = 0.731 kg coefficient of static friction (μs) = 0.29 coefficient…

Q: Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming…

Q: F_ m m μsk y x

Q: A car is driving along a level and unbanked circular track of diameter d=0.54km at a constant speed…

Q: A skier traveling travelling with a magnitude of velocity v approaches a ramp that has an angle of…

Q: One end of a rope is tied to a 11 kg hanging weight. The rope goes over a pulley and the other end…

Q: A person driving on I-82 glanced at his phone to read a very important text message. When he looked…

A: Displacement S = 96.5 mFinal velocity v = 0 m/sDrag sled mass m = 3.9 kgDrag sled Force Fr = 28 N

Q: A man pushes an object to the right and exerts a force which has a horizontal compotent of F = 33 N.…

A: External force on the body F = 33 NFrictional force fs = 15 NMass of the object m = 31 kg.Given time…

Q: The Johnsons just received a heavy package (perhaps a treadmill) in the mail that they ordered from…

Q: You push a box (mass 3 kg) so that its initial speed is 2.2 m/s. It slides across a rough floor…

A: KE=Wfriction12mv2=μkmgdd=v22μkg

Q: A plastic disc is flicked up a sloping board. It has an initial speed of 1.6 ms-1, but gradually…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: SCSU physics and astronomy student club has a recently established tradition of pumpkin drop, from…

A: According to the Newton's laws of motion , the final velocity (v) and the displacement () are…

Q: Consult Multiple Concept Example 10 in preparation for this problem. Traveling at a speed of 12.4…

Q: Brake or turn? The figure depicts an overhead view of a car's path as the car travels toward a wall.…

Q: The figure shows a container of mass m₁ = 4.8 kg connected to a block of mass m₂ by a cord looped…

Q: A stacked pair of books with masses m1= 1.5 kg (bottom book) and m2 = 1.0 kg (top book) are tossed…

Q: The Johnsons just received a heavy package (perhaps a treadmill) in the mail that they ordered from…

Q: A box of mass 7.3 kg is slid along the floor. The initial speed of the box is 6 m/s and it comes to…

Q: A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a…

Q: A hockey puck ( mass 160 grams ) slides across the ice. It's initial velocity is 10 m/s. If the…

A: ⁰

Q: You are out on a hike and come across an unfortunate scene: a fellow hiker has fallen off a ledge.…

Q: In deep space, an astronaut is whipping a heavy tool around in a circle by a taut cable. The cable…

Q: car starts from rest and accelerates at a constant rate until it reaches 90 mi/hr in a distance of…

Q: The strings and frictionless pulleys have negligible masses. The coefficients of kinetic friction…

A: Given that, the mass of block A is mA=3kg the mass of block B is mB=4kg coefficient of kinetic…

Q: You are the physics consultant working on an action movie set where an SUV must start from rest,…

A: We will use some equations of motion.Also neglect air drag.

Q: Two packages at UPS start sliding down the 20° ramp shown in the figure. Package A has a mass of…

Q: A drag chute must be designed to reduce the speed of a 1171 kg dragster from 342 km/hr to 80 km/hr…

A: Solution:-Given thatm=1171 kgwhen t=0; V1=342 km/hrwhen t=4 s; V2=80 km/hrFdrag=kv

Q: A car is driving along a circular track with diameter d = 0.59km at a constant speed of v = 21.2…

A: Dimatere of circular track is Speed of vehicle is Note:Gravitational acceleration is Find:The…

Q: 201 cars initial speed. 525 A8. LEEDS0370 A car of mass 200 kg is travelling along a straight…

Q: stacked pair of books with masses m1= 2.0 kg (bottom book) and m2 = 1.5 kg (top book) are tossed…

A: The normal force exerted by the table on the first bolook N1= its weight = mg= 2×10=20 N . Similarly…

Q: A Box is placed on a 40° slope with a coefficient of friction of 0.30. The box starts approximately…

A: Given: θ=40°μslope = 0.30h=6.0 mμhori.=0.45

Q: A mass is suspended from the ceiling in an elevator by a heavy rope. The mass is 80 kg and the mass…

A: Let, the mass be, M=80 kg The mass of the rope, m=2 kg The maximum tension the rope can experience…

Q: We often think of friction and air resistance as forces that we want to minimize because they can…

Q: A small object is initially at rest at the top of a large solid sphere that is fixed on the ground.…

Q: A ski that is placed on snow will stick to the snow. However, when the ski is moved along the snow,…

A: Given: Old ski acceleration = 0.097m/s2 New ski acceleration = 0.26m/s2

Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

Before 1960, people believed that the maximum attainable coefficient of static friction for an automobile tire on a roadway was μ = 1. Around 1962, three companies independently developed racing tires with coefficients of 1.6. This problem shows that tires have improved further since then. The shortest time interval in which a piston-engine car initially at rest
has covered a distance of one-quarter mile is about 4.43 s.
weme
MOTOMA
Christopher Halloran/Shutterstock.com
(a) Assume the car's rear wheels lift the front wheels off the pavement as shown in the figure above. What minimum value of μ
is necessary to achieve the record time?
(b) Suppose the driver were able to increase his or her engine power, keeping other things equal. How would this change affect the elapsed time?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data

VIEW

Step 2: Finding acceleration

VIEW

Step 3: Finding coefficient of friction

VIEW

Step 4: Explanation

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A person driving on I-82 glanced at his phone to read a very important text message. When he looked back up at the road, he saw that the traffic ahead had come to a standstill and he immediately slammed on his brakes. His car created 96.5 m long skid marks before rear-ending another car. Unfortunately, a passenger in the rear-ended car was seriously injured, thus requiring an investigation by the State Patrol. The State Patrol has no proof of distracted driving, however they want to determine if a citation for speeding should be issued. A State Patrol investigator used a 3.9 kg drag sled to determine the coefficient of kinetic friction between the road and the tires of the car. The drag sled’s spring scale read 28 N when it was pulled along the ground at a constant speed. Use Newton’s Second Law and kinematics to estimate the minimum value of the car’s speed when the driver locked the brakes. (answer: about 83 mi/hr) Note: You do not need the mass of the car to answer this…
Time left 0:20:32 An amusement park in Dubai has a ramp which is frictionless. A child drops a smooth object and it slides down the ramp and comes down through a height 4 m. What distance is necessary to stop the object on the flat track if the coefficient of friction is 0.4? h. Answer:
A child of mass 26 kg , is sliding down a water-slide that has an angle of 32 deg. If the water lubricates the slide to a frictionless surface, and the slide is 9 meters long. What is the child's velocity at the bottom?
At an accident scene on a level road, investigators measure a car's skid mark to be 88 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35. a.)Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. Express your answer to two significant figures and include the appropriate units.
A robot with fancy wheels is trained to move in two directions simultaneously. The force in the forward direction is 10 N and the force in the horizontal direction is 8 N. If the robot starts from rest, has a mass of 75 kg and travels for 100 seconds, what is the magnitude of the robot's final displacement?
You are driving through the Ouachita Mountains at 12m/s. You see a maple-leaf oak (Quercus acerifolia) crossing the road and hit the brakes, 20m away. The coefficient of kinetic friction between your tires and the road is μ_k = 0.7. Will you strike this endangered broadleaf? Justify your answer with a calculation.Your final answer should be the distance you will travel before coming to a stop.
David throws a 50 kg cart down a ramp with an initial speed of vi = 6 m/s. The ramp is at an angle of 20◦, and the coefficient of kinetic friction between the cart and the ramp is µk = 0.25. Additionally, the coefficient of static friction is µs = 0.55. How much time does it take to reach Ryan who is 10 m away? Assume that the cart slides and doesn’t roll.
Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book was 725 grams. The coefficient of static friction between the book and the roof was 0.28. The coefficient of kinetic friction between the book and the roof was 0.23. Maria started her car and drove forward on level ground with an acceleration of 3.6 m/s?. As Maria was driving away with that acceleration, what was the magnitude of the force of friction (in newtons) between the book and the roof of the car?
For Problems 1 and 2, use the following formula to describe the magnitude of a drag force: 1 D = — -CA pv² 2 FD Problem 1: When a car is traveling at a speed of 30 km/h, it experiences a drag force of magnitude F. If the car increases its speed to 40 km/h, what then will be the drag force it experiences? Assume the drag force is proportional to the square of speed.
At Ted's request, Bill pushes the pizza box across the granite countertop towards Ted. When the box leaves Bill's hand it is sliding at 2.60 m/s. The box comes to rest over a distance of 110 cm. What is the coefficient of kinetic friction, uk, between the pizza box and the countertop? (Ignore air drag.)
You are quite excited with the lesson in friction that you learned in Physics 1A that you decide to measure the coefficient of kinetic friction of surfaces. You try your idea on a glass surface and a glass cup (mass = 0.15 kg). You set the glass cup moving with an initial speed of 2.8 m/s. After travelling a length of 1 m, it stopped. What then is the coefficient of kinetic friction of the glass-glass surfaces?