College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 15PE
Repeat Exercise 5.14 for a car with four-wheel drive.
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Your car rolls along a level street at 75 km/h to the right, in neutral and without braking. If the coefficient of
rolling friction is 0.01, how far will the car coast before stopping? Give your answer in meters.
See the attached sheet below for a starting hint.
Suppose you use an ideal pulley of the top shown in figure 5.18 (b) and find it necessary to exert a force of 240 N to support a load .
(a) what is the loads mass ? kg ? (b) what is exerted on the ceiling ? Neglect the pulley systems mass. n? (Upward)
A car goes around a curve on a road that is banked at an angle of21.5°. Even though the road is slick, the car will stay on the roadwithout any friction between its tires and the road when its speedis 19.8 m>s. What is the radius of the curve?
Chapter 5 Solutions
College Physics
Ch. 5 - Define normal force. What is its relationship to...Ch. 5 - The glue on a piece of tape can exert forces. Can...Ch. 5 - When you learn to drive, you discover that you...Ch. 5 - When you push a piece of chalk across a...Ch. 5 - Athletes such as swimmers and bicyclists wear body...Ch. 5 - Two expressions were used for the drag force...Ch. 5 - As cars travel, oil and gasoline leaks onto the...Ch. 5 - Why can a squirrel jump from a tree branch to the...Ch. 5 - The elastic properties of the arteries are...Ch. 5 - What are you feeling when you feel your pulse?...
Ch. 5 - Examine different types of shoes, including sports...Ch. 5 - Would you expect your height to be different...Ch. 5 - Why can a squirrel from a tree branch to the...Ch. 5 - Explain why pregnant women often suffer from back...Ch. 5 - An old carpenter's trick to keep nails from...Ch. 5 - When a glass bottle full of vinegar warms up, both...Ch. 5 - A physics major is cooking breakfast when he...Ch. 5 - (a) When rebuilding her car's engine, a physics...Ch. 5 - (a) What is the maximum frictional force in the...Ch. 5 - Suppose you have a 120-kg wooden crate resting on...Ch. 5 - (a) If half of the weight of a small 1.00103 kg...Ch. 5 - A team of eight dogs pulls a sled with waxed wood...Ch. 5 - Consider the 65.0-kg ice skater being pushed by...Ch. 5 - Show that the acceleration of any object down a...Ch. 5 - Show that the acceleration of any object down an...Ch. 5 - Calculate the deceleration of a snow boarder going...Ch. 5 - (a) Calculate the acceleration of a skier heading...Ch. 5 - If an object is to rest on an incline without...Ch. 5 - Calculate the maximum deceleration of a car that...Ch. 5 - Calculate the maximum acceleration of a car that...Ch. 5 - Repeat Exercise 5.14 for a car with four-wheel...Ch. 5 - A freight train consists of two 8.00105 -kg...Ch. 5 - Consider the 52.0-kg mountain climber in Figure...Ch. 5 - A contestant in a winter sporting event pushes a...Ch. 5 - Repeat Exercise 5.18 with the contestant pulling...Ch. 5 - The terminal velocity of a person falling in air...Ch. 5 - A 60-kg and a go-kg skydiver jump from an airplane...Ch. 5 - A 560-g squirrel with a surface area of 930 cm2...Ch. 5 - To maintain a constant speed, the force provided...Ch. 5 - By what factor does the drag force on a car...Ch. 5 - Calculate the speed a spherical rain drop would...Ch. 5 - Using Stokes' law, verify that the units for...Ch. 5 - Find the terminal velocity of a spherical...Ch. 5 - Stokes' law describes sedimentation of particles...Ch. 5 - During a circus act, one performer swings upside...Ch. 5 - During a wrestling match, a 150 kg wrestler...Ch. 5 - (a) The "lead" in pencils is a graphite...Ch. 5 - TV broadcast antennas are the tallest artificial...Ch. 5 - (a) By how much does a 65.0-kg mountain climber...Ch. 5 - A 20.0-m tall hollow aluminum flagpole is...Ch. 5 - As an oil well is drilled, each new section of...Ch. 5 - Calculate the force a piano tuner applies to...Ch. 5 - A vertebra is subjected to a shearing force of 500...Ch. 5 - A disk between vertebrae in the spine is subjected...Ch. 5 - When using a pencil eraser, you exert a vertical...Ch. 5 - To consider the effect of wires hung on poles, we...Ch. 5 - A farmer making grape juice fills a glass bottle...Ch. 5 - (a) When water freezes, its volume increases by...Ch. 5 - This problem returns to the tightrope walker...Ch. 5 - The pole in Figure 5.24 is at a 90.0° bend in a...
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- A car travels with mass 1,574 kg is following a curve of radius 490m at a speed of 22.2 m/s. What is the minimum coefficient of static friction that allows the car to stay on the road?arrow_forwarda 650 kg car is taking a circular turn with a radius of 225 m that is banked with a 20 grade. If there is a coefficient of friction of 0.20 between the tires and the road, what use the maximum velocity the car can go without slipping up or down the turn?arrow_forwardA woman is riding a Jet Ski at a speed of 30 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 20°. This situation is like that of a car on a curve that is banked at an angle of 20°. If she tries to make the turn without slowing down, what is the minimum distance from the seawall that she can begin making her turn and still avoid a crash?arrow_forward
- A car travels around a circle with a diameter of 500 m at a constant speed of 25 m/s. The static friction coefficient is 0.3 and the kinetic friction coefficient is 0.2. Will the car skid?arrow_forwardA block of mass 1.96kg is accelerated across a rough surface by a rope passing over a pulley, as shown in the figure below. The tension in the rope is 14.0N, and the pulley is 10.8cm above the top of the block. The coefficient of kinetic friction is 0.350. Calculate the value of x at which the acceleration becomes zero.arrow_forwardA car moving at 41 km/h negotiates a 150 m -radius banked turn designed for 60 km/h . What coefficient of friction is needed to keep the car on the road? Express your answer using two significant figures.arrow_forward
- 5.3arrow_forwardSuppose you use an ideal pulley of the top shown in figure 5.18(a) Play to support a car engine of mass 150 kg. (a) what would the tension in the rope be? n? what force must the ceiling supply ,assuming you pull straight down on the rope ? Neglect the pulley systems mass. n (upward) ?arrow_forwardYou are driving and approaching a banked curve, 5% slope. If the speed limit says that the maximum speed is 100 kph while the minimum is 30 kph, what is the static friction coefficient between the road and the tires?arrow_forward
- A block is placed on a turntable 43 cm from the axis of rotation. The turntable very slowly speeds up to 35.5 RPM. What is the minimum coefficient of static friction between the block and the turntable surface that would prevent the block from sliding away under these conditions?arrow_forward"plastered" against the wall. Suppose the radius of the room is 3.91 m and the speed of the wall is 13.9 m/s when the floor falls away. The source of the centripetal force on the riders is the normal force provided by the wall. (a) How much centripetal force acts on a 54.5 kg rider? (b) What is the minimum coefficient of static friction that must exist between the rider's back and the wall, if the rider is to remain in place when the floor drops awayarrow_forwardA 1 500-kg car moving on a flat, horizontal road negotiates a curve as shown in the overhead view in 6.4a. If the radius of the curve is 35.0 m and the coefficient of static friction between the tires and dry pavement is 0.523, find the maximum speed the car can have and still make the turn successfully.arrow_forward
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