Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5, Problem 74P
You’re al the state fair. A sideshow barker claims that the star of the show can throw a 7.3-kg Olympic-style hammer “faster than a speeding bullet.” You recall that bullets travel at several hundreds of meters per second. The burly hammer thrower whirls the hammer in a circle that you estimate to be 2.4 m in diameter. You guess the chain holding the hammer makes an angle of 10° with the horizontal. When the hammer flies off, is it really moving faster than a bullet?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The mass of the Earth is 5.98 × 10^24 kg. A 9.29 kg bowling ball initially at rest is dropped from a height of 3.59 m. The acceleration of gravity is 9.8 m/s^2.
What is the speed of the Earth coming up to meet the ball just before the ball hits the ground? Answer in units of m/s.
The mass of the Earth is 5.98 × 1024 kg.A 3.87 kg bowling ball initially at rest isdropped from a height of 4.76 m.The acceleration of gravity is 9.8 m/s2. What is the speed of the Earth coming upto meet the ball just before the ball hits theground?
A rocket sled accelerates to 41 m/s. When the rocket engine stops, the sled skids along its rails. If the coefficient of
friction is 0.5 and its mass is 1000 kg, how fast is the sled moving after 2.2 s?
Chapter 5 Solutions
Essential University Physics (3rd Edition)
Ch. 5.1 - A roofers toolbox rests on an essentially How does...Ch. 5.2 - In the figure below weve replaced one of the hands...Ch. 5.3 - You whirl a bucket of water around in a vertical...Ch. 5.4 - The figure shows a logging vehicle pulling a...Ch. 5 - Compare the net force on a heavy trunk when its...Ch. 5 - The force of static friction acts only between...Ch. 5 - A jet plane flies at constant speed in a vertical...Ch. 5 - In cross-country skiing, skis should easily glide...Ch. 5 - Why do airplanes bank when turning?Ch. 5 - Why is it easier for a child to stand nearer the...
Ch. 5 - Gravity pulls a satellite toward Earths center. So...Ch. 5 - Explain why a car with ABS brakes can have a...Ch. 5 - A fishing line has a 20-lb breaking strength. Is...Ch. 5 - Two blocks rest on slopes of unequal angles,...Ch. 5 - Youre on a plane undergoing a banked turn, so...Ch. 5 - A backcountry skier weighing 700 N skis down a...Ch. 5 - Two forces, both in the x-y plane, act on a...Ch. 5 - Two forces act on a 3.1-kg mass that undergoes...Ch. 5 - At what angle should you tilt an air table to...Ch. 5 - A skier starts from rest at the top of a 24 slope...Ch. 5 - A tow truck is connected to a 1400-kg car by a...Ch. 5 - Studies of gymnasts show that their high rate of...Ch. 5 - Find the minimum slope angle for which the skier...Ch. 5 - Section 5.2 Multiple Objects Your 12-kg baby...Ch. 5 - If the left-hand slope in Fig. 5.30 makes a 60...Ch. 5 - Suppose the angles shown in Fig. 5.30 are 60 and...Ch. 5 - Two unfortunate climbers, roped together, are...Ch. 5 - Suppose the Moon were held in its orbit not by...Ch. 5 - Show that the force needed to keep a mass m in a...Ch. 5 - A 940-g rock is whirled in a horizontal circle at...Ch. 5 - Youre investigating a subway accident in which a...Ch. 5 - A tetherball on a 1.55-m rope is struck so that it...Ch. 5 - An airplane goes into a turn 3.6 km in radius. If...Ch. 5 - Movers slide a 73-kg file cabinet along a floor...Ch. 5 - A hockey puck is given an initial speed of 14 m/s....Ch. 5 - Starting from rest, a skier slides 100 m down a 28...Ch. 5 - A car moving at 40 km/h negotiates a 130-m-radius...Ch. 5 - Prob. 34PCh. 5 - A block is launched with initial speed 2.2 m/s up...Ch. 5 - In the process of mitosis (cell division), two...Ch. 5 - A 14.6-kg monkey hangs from the middle of a...Ch. 5 - A camper hangs a 26-kg pack between two trees...Ch. 5 - A mass m, undergoes circular motion of radius R on...Ch. 5 - Patients with severe leg breaks arc often placed...Ch. 5 - Riders on the Great American Revolution...Ch. 5 - A 45-kg skater rounds a 5.0-m-radius turn at 6.3...Ch. 5 - When a piano turns, it banks as shown in Fig. 5.35...Ch. 5 - You whirl a bucket of water in a vertical circle...Ch. 5 - A child sleds down an 8.5 slope at constant speed....Ch. 5 - The handle of a 22-kg lawnmower makes a 35 angle...Ch. 5 - Repeal Example 5.4, now assuming that the...Ch. 5 - A bat crashes into the vertical front of an...Ch. 5 - The coefficient of static friction between steel...Ch. 5 - A bug crawls outward from the center of a CD...Ch. 5 - A 310-g paperback book rests on a 1.2-kg textbook....Ch. 5 - Children sled down a41-m-long hill inclined at 25....Ch. 5 - In a typical front-wheel-drive car, 70% of the...Ch. 5 - A police officer investigating an accident...Ch. 5 - A slide inclined at 35 takes bathers into a...Ch. 5 - You try to move a heavy trunk, pushing down and...Ch. 5 - A block is shoved up a 22 slope with an initial...Ch. 5 - At the end of a factory production line, boxes...Ch. 5 - Youre in traffic court, arguing against a speeding...Ch. 5 - A space station is in the shape of a hollow ring,...Ch. 5 - In a loop-the-loop roller coaster, show that a car...Ch. 5 - Find an expression for the minimum frictional...Ch. 5 - An astronaut is training in an earthbound...Ch. 5 - You stand on a spring scale at the north pole and...Ch. 5 - Driving in thick fog on a horizontal road, you...Ch. 5 - A block is projected up an incline at angle . It...Ch. 5 - A 2.1-kg mass is connected to a spring with spring...Ch. 5 - Take k = 0.75 in Example 5.11, and plot the...Ch. 5 - Repeat the preceding problem for an arbitrary...Ch. 5 - Moving through a liquid, an object of mass m...Ch. 5 - Suppose the object in Problem 70 had an initial...Ch. 5 - A block is launched with speed v0 up a slope...Ch. 5 - A florist asks you to make a window display with...Ch. 5 - Youre al the state fair. A sideshow barker claims...Ch. 5 - One of the limiting factors in high-performance...Ch. 5 - Figure 5.39 shows an apparatus used to verify...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...Ch. 5 - A spiral is an ice-skating position in which the...
Additional Science Textbook Solutions
Find more solutions based on key concepts
(II) Determine if the function D = A sin k x cos ωt is a solution of the wave equation.
Physics for Scientists and Engineers with Modern Physics
Choose the best answer to each of the following. Explain your reasoning. We can be sure that variation in Earth...
The Cosmic Perspective Fundamentals (2nd Edition)
Where (in the southern sky, on the eastern horizon, on the western horizon, high in the sky, etc.) would you l...
Lecture- Tutorials for Introductory Astronomy
Frogs tongues dart out to catch insects, with maximum tongue accelerations of about 250 m/s2. What force is nee...
Essential University Physics: Volume 1 (3rd Edition)
Recall the motion of the block in part B. For each force that you identified, state whether that force did posi...
Tutorials in Introductory Physics
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective (8th Edition)
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 car (mass 1000 kg) is traveling at 60 mph (26.82 m/s) when the driver notices a cat 50 m ahead in the road. Wanting to save the feline's life, the driver slams on the brakes and comes to a stop 2 m in front of the cat. What was the car's acceleration as it was braking?arrow_forwardSpaceman Spiff needs to turn his 700 kg rocket and go in the opposite direction to escape the Zoks. He begins by is traveling through space at 3710 m/s when he reverses his course, going in the opposite direction with a speed of 5781 m/s. If his rocket thrusters push his craft with 87000 N of force, how long must he fire his rockets to make the change? 17 sarrow_forwardMartin is spinning a rope over his head with a weight attached to the end. The rope has a length of 1.7 m, and Martin spins it so that the weight has a velocity of 5.9 m/s. If the rope can only withstand a force of 88 N, what is the maximum mass the weight can have?arrow_forward
- A child with mass of 16.5 kg stands on the edge of a park bench and leaps into the air. Her initial speed is 2.4 m/s directed at an angle of 30 degrees above the horizontal. After 0.28 seconds what is the horizontal component of her velocity in m/s?arrow_forwardSpring Gun: Planet X was just discovered orbiting a nearby star! It orbits a start that is 6.9 times the mass of our sun in a solar system just 31.3 light-years away. The acceleration due to gravity there is 0.07 g. After making some measurements in lab, you start to daydream about travel to other planets. Your spring gun can launch a projectile with a speed of 3.7 m/s. What would happen if you were to launch a projectile at an angle of 32 ° above horizontal on Planet X? (a) What maximum height would the projectile reach? (b) How far would the projectile travel before it hit the ground? Assume the projectile lands at the same height it was launched from.arrow_forwardll Problem Three. Consider two planets: Neptune with a mass of m, × 1.02×10% kg and Uranus with a mass of m, = 8.68 x10*kg. The planets are a distance of d =1.62×10°km apart. Let Neptune be at the origin of a coordinate system, and Uranus be along the positive x-axis. (See the diagram below.) m2 X Find the location "x" where a test particle would accelerate toward the two planets with a force that is half due to Neptune, and half due to Uranus. Give an answer in 1010 km. 7.) (A) 5.6 B) 3.6 (C) 9.4 (D) 2.1 (E) 8.9 Consider if a large asteroid of mass m =1.00×10²ºkg is a distance d above m. Find the magnitude of the gravitational force the asteroid experiences due to both planets. Give an answer in units of 1010 N. 8.) (A) 35 (B) 83 (C) 71 (D) 53 (E) 98arrow_forward
- An object is dropped from an altitude of one Earth radius above Earth's surface. If M is the mass of Earth and R is its radius, the speed of the object just before it hits Earth is given by: GM R 0 GM 2R O GM V2R 0 GM VR 2GM Rarrow_forwardAn aging coyote (m = 42.1 kg) cannot run fast enough to catch a roadrunner (m = 16.3 kg). He purchases a set of jet-powered roller skates, which proved a constant horizontal acceleration of 15.2 m/s2. The coyote starts at rest 73.2 m from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff. Hint: their initial positions at the top of the cliff are the same. a. Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. b. At the edge of the cliff, the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyote’s skates remain horizontal and continue to operate while he is in flight, so his acceleration while he is in the air is (15.2i – 9.80j) m/s2. The cliff is 127 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands. c. Determine the components of the coyote’s impulse upon impact.arrow_forwardA 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50×105 kg, its speed is 68.0 m/s, and the net braking force is 4.30×105N, what is its speed 11.0 s later? How far has it traveled in this time?arrow_forward
- A pendulum has a length l (the rope is massless). The mass of the object suspended from the pendulum is m. With rope horizontal θ = 90o When it makes an angle of degrees, we first leave the object at no speed. Any friction can be neglected. Gravitational acceleration g. Give your answers in terms of l, m and g. When = 0o, what is the tension in the rope?arrow_forwardYou go where no one has gone before and discover an interesting planet of radius r. When you arrive, you clearly want to do some experiments to learn more about this world. You begin with some simple kinematics and measure the time t for an object thrown directly up with velocity vi to return to your hand. With this information, you find that the acceleration due to gravity g is much lower than on Earth. a) Find the mass of the planet mp in terms of vi, t, r, and any necessary constants. b) You decide to orbit the planet in your spacecraft at a distance R above the surface of the planet. Find the time required to complete one orbit in terms of R, r, Vi, t, and any necessary constants. c) Find the escape velocity ve– the initial velocity necessary for an object to barely escape the gravitational pull of the planet. Express your answer in terms of Vi, r, t, and any necessary constants. d) Find the distance from the planet's center at which an object launched from the surface with…arrow_forwardI. A 10.0 kg mass is acted on by the two forces: F = (3.0N)î + (2.0N)j and F, = (10.0N)i + (-7.0N) a) Express the summation of these two forces in unit vector notation. That is: %3D %3! F=F F+F, b) What is the acceleration of this mass while these forces are acting? Write your answer in unit vector notation form. c) What is the direction of the acceleration (give the angle of acceleration with the x axis) and its magnetitude?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Electric Fields: Crash Course Physics #26; Author: CrashCourse;https://www.youtube.com/watch?v=mdulzEfQXDE;License: Standard YouTube License, CC-BY