EBK COLLEGE PHYSICS
4th Edition
ISBN: 8220106755235
Author: Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 6, Problem 18P
A fast pitch softball player does a “windmill” pitch, illustrated in Figure P6.18. moving her hand through a circular arc to pitch a ball at 70 mph. The 0.19 kg ball is 50 cm from the pivot point at her shoulder. At the lowest point of the circle, the ball has reached its maximum speed.
Figure P6.18
a. At the bottom of the circle, just before the ball leaves her hand, what is its centripetal acceleration?
b. What are the magnitude and direction of the force her hand exerts on the ball at this point?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A roller coaster contains a loop-the-loop in which the car and rider are completely upside down at the top
of the loop. The radius of the loop is 16 m.
What minimum speed (in m/s) must the car have at the top so that the rider does not fall out while upside
down? Assume the rider is not strapped to the car.
12.53 m/s.
What is the magnitude of the normal force at the top of the loop?
What is the magnitude of the normal force at the bottom of the loop?
A 750 g ball swings in a vertical circle at the end of a 1.5 m long string. When the ball is at the bottom of the circle, the tension in the string is 40 N. What is the speed of the ball at that point?
H6.
A skier/snowboarder starts at rest at the top of a snowy (friction-free) hill with height h1. After the bottom of this hill there is a small “jump” hill. The top of the jump has height h2 and a curvature of radius R. What is the minimum height of the starting hill, h1min, so that the skier/snowboarder jumps or “catches air” at the top of hill 2? Solve for h1min in terms of h2, R, and g. Hint: if the skier/snowboarder jumps, he/she/they loose contact with the snowy ground.
Chapter 6 Solutions
EBK COLLEGE PHYSICS
Ch. 6 - A cyclist goes around a level, circular track at...Ch. 6 - In uniform circular motion, which of the following...Ch. 6 - Prob. 3CQCh. 6 - Prob. 4CQCh. 6 - Large birds like pheasants often walk short...Ch. 6 - When you drive fast on the highway with muddy...Ch. 6 - A ball on a string moves in a vertical circle as...Ch. 6 - Give an everyday example of circular motion for...Ch. 6 - Give an everyday example of circular motion for...Ch. 6 - Prob. 10CQ
Ch. 6 - A car coasts at a constant speed over a circular...Ch. 6 - In Figure Q6.11, at the instant shown, is the...Ch. 6 - Riding in the back of a pickup truck can be very...Ch. 6 - Playground swings move through an arc of a circle....Ch. 6 - Variation in your apparent weight is desirable...Ch. 6 - Prob. 16CQCh. 6 - Why is it impossible for an astronaut inside an...Ch. 6 - If every object in the universe feels an...Ch. 6 - A mountain climbers weight is slightly less on the...Ch. 6 - Prob. 20CQCh. 6 - A ball on a string moves around a complete circle,...Ch. 6 - As seen from above, a car rounds the curved path...Ch. 6 - As we saw in the chapter, wings on race cars push...Ch. 6 - Prob. 24MCQCh. 6 - Prob. 25MCQCh. 6 - The cylindrical space station in Figure Q6.25, 200...Ch. 6 - The radius of Jupiter is 11 times that of earth,...Ch. 6 - A newly discovered planet has twice the mass and...Ch. 6 - Suppose one night the radius of the earth doubled...Ch. 6 - Currently, the moon goes around the earth once...Ch. 6 - Two planets orbit a star. You can ignore the...Ch. 6 - A 5.0-m-diameter merry-go-round is turning with a...Ch. 6 - Prob. 2PCh. 6 - An old-fashioned LP record rotates at 3313rpm. a....Ch. 6 - A typical hard disk in a computer spins at 5400...Ch. 6 - Prob. 5PCh. 6 - The horse on a carousel is 4.0 m from the central...Ch. 6 - The radius of the earths very nearly circular...Ch. 6 - Modern wind turbines are larger than they appear,...Ch. 6 - Prob. 9PCh. 6 - Prob. 10PCh. 6 - Prob. 11PCh. 6 - A typical running track is an oval with...Ch. 6 - Figure P6.13 is a birds-eye view of particles on a...Ch. 6 - In short-track speed skating, the track has...Ch. 6 - Prob. 15PCh. 6 - A cyclist is rounding a 20-m-radius curve at 12...Ch. 6 - A 1500 kg car drives around a flat 200-m-diameter...Ch. 6 - A fast pitch softball player does a windmill...Ch. 6 - Prob. 19PCh. 6 - A wind turbine has 12,000 kg blades that are 38 m...Ch. 6 - Youre driving your pickup truck around a curve...Ch. 6 - Prob. 22PCh. 6 - Gibbons, small Asian apes, move by brachiation,...Ch. 6 - The passengers in a roller coaster car feel 50%...Ch. 6 - Prob. 25PCh. 6 - A roller coaster car is going over the top of a...Ch. 6 - As a roller coaster car crosses the top of a...Ch. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - A satellite orbiting the moon very near the...Ch. 6 - Spacecraft have been sent to Mars in recent years....Ch. 6 - The centers of a 10 kg lead ball and a 100 g lead...Ch. 6 - The gravitational force of a star on an orbiting...Ch. 6 - The free-fall acceleration at the surface of...Ch. 6 - What is the ratio of the suns gravitational force...Ch. 6 - Prob. 38PCh. 6 - In recent years, astronomers have found planets...Ch. 6 - Prob. 40PCh. 6 - a. What is the gravitational force of the sun on...Ch. 6 - What is the value of g on the surface of Saturn?...Ch. 6 - What is the free-fall acceleration at the surface...Ch. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Planet X orbits the star Omega with a year that is...Ch. 6 - The International Space Station is in a...Ch. 6 - An earth satellite moves in a circular orbit at a...Ch. 6 - In recent years, scientists have discovered...Ch. 6 - In recent years, scientists have discovered...Ch. 6 - In recent years, scientists have discovered...Ch. 6 - How fast must a plane fly along the earths equator...Ch. 6 - Prob. 55GPCh. 6 - A 75 kg man weighs himself at the north pole and...Ch. 6 - Prob. 57GPCh. 6 - Prob. 58GPCh. 6 - Prob. 60GPCh. 6 - Prob. 61GPCh. 6 - Prob. 62GPCh. 6 - Prob. 63GPCh. 6 - Prob. 64GPCh. 6 - A 5.0 g coin is placed 15 cm from the center of a...Ch. 6 - In an old-fashioned amusement park ride,...Ch. 6 - The 0.20 kg puck on the frictionless, horizontal...Ch. 6 - While at the county fair, you decide to ride the...Ch. 6 - A car drives over the top of a hill that has a...Ch. 6 - The ultracentrifuge is an important tool for...Ch. 6 - A sensitive gravimeter at a mountain observatory...Ch. 6 - Prob. 72GPCh. 6 - Planet Z is 10,000 km in diameter. The free-fall...Ch. 6 - How long will it take a rock dropped from 2.0 m...Ch. 6 - A 20 kg sphere is at the origin and a 10 kg sphere...Ch. 6 - a. At what height above the earth is the free-fall...Ch. 6 - Mars has a small moon, Phobos, that orbits with a...Ch. 6 - You are the science officer on a visit to a...Ch. 6 - Europa, a satellite of Jupiter, is believed to...Ch. 6 - The direction of the net force on the craft is A....Ch. 6 - Suppose a spacecraft orbits the moon in a very...Ch. 6 - How much time does it take for the spacecraft to...Ch. 6 - The material that comprises the side of the moon...
Additional Science Textbook Solutions
Find more solutions based on key concepts
23.81 DATA The Millikan Oil-Drop Experiment. The charge of an electron was first measured by the American physi...
University Physics with Modern Physics (14th Edition)
A friend says, “It makes no sense that Anna could turn on lights in her hands simultaneously in her frame but t...
Modern Physics
Write each number in scientific notation.
8. 0.00053
Applied Physics (11th Edition)
46. Wheels of a toy cart are rolled from a concrete sidewalk onto the following surfaces: A. A paved driveway. ...
Conceptual Physical Science (6th Edition)
What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell is acceler...
College Physics
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
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 0.1 kg ball is attached to a string and whirled around in a circle overhead. The string breaks if the force on it exceeds 60 N. What is the maximum speed the ball can have when the radius of the circle is 1 m?arrow_forwardP8. A 30kg child rides a circus train that performs vertical turns of radius 20 m every 22 sec. What is the resulting force when the child is at the top of the trajectory?arrow_forward1. I am driving my 3500 pound weight car at 45 mph around a flat curve of radius 50 meters. If the us = 0.85, do I make it around the curve? (Y/N). It starts raining and the us drops to .65. Do I make it now? (Y/N). At that speed what is the kinetic energy of my car? Joules 2. Tom is doing a bucket lab with a mass of 5 kg of water. If he swings it 8 times around in 8 seconds and his arm is 0.8 meters long, what centripetal force is the bucket putting on his shoulder? Does the water fall on him? Newtons. _(Y/N). If he were on Mars (m-6.42*10^23 Kg, R=3397000 meters) would he get wet? 3. You are working on a pumped storage facility design. You have a pond on top of a hill. You approximate the pond as a cylinder with a diameter of 1500 feet and an average depth of 20 feet. The center of the pond is 300 feet above a river where you will let the pond full of water flow thru a turbine making electricity. What is the GPE of the pond? joulesarrow_forward
- Mercury is the closest planet to the Sun. has a mass of 3.18 × 1023 kg and an average radius of 2.43 × 106 m . Mercury rotates very slowly, and for this problem, you can ignore this rotation when calculating forces and energy. A. What is the acceleration due to gravity (gmercury) near Mercury's surface? B. A baseball player can throw a baseball 15 m straight up on Earth. How high could the throw the same baseball on Mercury? Assume they can throw with the same initial speed. C. What is the escape velocity of Mercury? D. Mercury spins very slowly, and a day on Mercury lasts 5.1 × 106 s, which is actually significantly longer than a year on Mercury. Suppose you wanted to put a geosynchronous satellite in circular orbit around Mercury so that the period of the satellite is also 5.1 × 106 s. What altitude above the surface would you need to locate this satellite?arrow_forwardA mother pushes her child on a swing so that his speed is 9.7 m/s at the lowest point of his path. The swing is attached to a point 2.05 m above the child’s center of mass when the swing is motionless.What is the centripetal acceleration of the child at the low point in m/s2? ac = 45.89 What is the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 19.5 kg in N?arrow_forward13. A roller coaster at the Six Flags QC Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. Each ver- tical loop, instead of being cir- cular, is shaped like a teardrop (Fig. P6.13). The cars ride on the inside of the loop at the top, and the speeds are fast enough AM to ensure the cars remain on the track. The biggest loop is 40.0 m high. Suppose the speed at the top of the loop is 13.0 m/s and the corresponding centripetal acceleration of the riders is 2g. (a) What is the radius of the arc of the teardrop at the top? (b) If the total mass of a car plus the riders is M, what force does the rail exert on the car at the top? (c) Suppose the roller coaster had a circular loop of radius 20.0 m. If the cars have the same speed, 13.0 m/s at the top, what is the centripetal acceleration of the riders at the top? (d) Comment on the normal force at the top in the situation described in part (c) and on the advantages of having…arrow_forward
- 13. A roller coaster at the Six Flags QIC Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. Each ver- tical loop, instead of being cir- cular, is shaped like a teardrop (Fig. P6.13). The cars ride on the inside of the loop at the top, and the speeds are fast enough to ensure the cars remain on the track. The biggest loop is 40.0 m high. Suppose the speed at the top of the loop is 13.0 m/s and the corresponding centripetal acceleration of the riders is 2g. (a) What is the radius of the arc of the teardrop at the top? (b) If the total mass of a car plus the riders is M, what force does the rail exert on the car at the top? (c) Suppose the roller coaster had a circular loop of radius 20.0 m. If the cars have the same speed, 13.0 m/s at the top, what is the centripetal acceleration of the riders at the top? (d) Comment on the normal force at the top in the situation described in part (c) and on the advantages of having…arrow_forwardA roller coaster car goes around a loop-the-loop, so it is upside down at the top at point A. The radius of the loop is R. The normal force on the car at the top of the loop is equal to 3mg. What is the speed of the car at the bottom? Ignore friction. A R 6gR 4gR 5gR O29R O89Rarrow_forwardMary and her younger brother Alex decide to ride the 17 ft diameter carousel at the State Fair. Mary sits on one of the horses in the outer section at a distance of 7 feet from the center. Alex decides to play it safe and chooses to sit in the inner section at a distance of 6 feet from the center. What is Mary's centripetal acceleration ay compared to that of Alex's centripetal acceleration a,? Give your answer as a multiple of aA. aAarrow_forward
- A 0.250 kg ball swings in a vertical circle on the end of a string that is 1.20 m long. The tension in the string is 15.0 N when it is falling toward the lowest point on the circle and the angle between the string and the vertical is 40.0°. What is the speed of the ball at this moment?arrow_forwardA space station is in a circular orbit about the earth at an altitude h of 5.0 x 10° km. If station makes one revolution every 95 min. A. What is the orbital speed? B. What is the centripetal accelerationarrow_forwardA mother pushes her child on a swing so that his speed is 9.7 m/s at the lowest point of his path. The swing is attached to a point 2.05 m above the child’s center of mass when the swing is motionless.What is the centripetal acceleration of the child at the low point in m/s2? ac = 45.89 But what is the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 19.5 kg in N? Fc =arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Kepler's Three Laws Explained; Author: PhysicsHigh;https://www.youtube.com/watch?v=kyR6EO_RMKE;License: Standard YouTube License, CC-BY