Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
Chapter 10, Problem 2A
Does a child on a merry-go-round revolve or rotate around the merry-go-round’s axis?
Expert Solution & Answer
To determine
To identify:Whether the child on a merry-go-round revolves or rotates around the axis of merry-go-round.
Answer to Problem 2A
The child on a merry-go-round revolves around the axis of merry-go-round.
Explanation of Solution
Introduction:
Consider an object is moving in a circular path about an axis in the interior of object, then the object is said to be rotating about the axis. For example: the rotation of the Earth about its own axis (line passing through the north and south poles of the Earth).
Consider an object is moving in a circular path about an axis in the exterior of object, then the object is said to be revolving about the axis. For example: the revolution of the Earth about the sun.
Consider a child is sitting in a merry-go-round.
The plan view of the merry-go-round is shown below:
The child sits in any of the seat A, B, C, and D .
All the seats are connected to the central pole O .
All the seats will be moving in a circular path about an axis passing through the centre of pole O .
The child sitting in any one of the seats will also move in a circular path about an axis passing through the centre of pole O .
Hence, the child on a merry-go-round revolves around the axis of merry-go-round.
Conclusion:
Thus, the child on a merry-go-round revolves around the axis of merry-go-round.
Chapter 10 Solutions
Conceptual Physics: The High School Physics Program
Ch. 10 - Distinguish between a rotation and a revolution.Ch. 10 - Does a child on a merry-go-round revolve or rotate...Ch. 10 - Distinguish between linear speed and rotational...Ch. 10 - What is linear speed called when something moves...Ch. 10 - At a given distance from the axis, how does linear...Ch. 10 - At a given rotational speed, how does linear (or...Ch. 10 - When you roll a cylinder across a surface it...Ch. 10 - When you whirl a can at the end of a string in a...Ch. 10 - Does an inward force or an outward force act on...Ch. 10 - When car makes a turn, do seat belts provide you...
Ch. 10 - If the string that holds a whirling can in its...Ch. 10 - Identify the action and reaction forces in the...Ch. 10 - A ladybug in the bottom of a whirling tin can...Ch. 10 - Why is the centrifugal force the ladybug feels in...Ch. 10 - Three locations on our rotating world are shown....Ch. 10 - Biker Bob rides his bicycle inside the rotating...Ch. 10 - Inside Biker Bobs space station is a ladder that...Ch. 10 - The three cups shown below are rolled on a level...Ch. 10 - Three types of rollers are placed on slightly...Ch. 10 - A meterstick is mounted horizontally above a...Ch. 10 - A ball is swung in a horizontal circle as shown...Ch. 10 - Paula flies a loop-the-loop maneuver at constant...Ch. 10 - A string is used to whirl a 2-kg toy in a...Ch. 10 - A 60-kg ice skater moving at 5 m/s grabs a 6-m...Ch. 10 - A 2-kg iron ball is swung in a horizontal circular...Ch. 10 - A 70-kg person sits on the edge of a horizontal...Ch. 10 - Dan and Sue cycle at the same speed. The tires on...Ch. 10 - A large wheel is coupled to a wheel with half the...Ch. 10 - Use the equation =r to explain why the end of a...Ch. 10 - The wheels of railroad trains are tapered, a...Ch. 10 - If you lose your grip on a rapidly spinning...Ch. 10 - Consider the pair of cups taped together as shown....Ch. 10 - Which state in the United States has the greatest...Ch. 10 - The speedometer in a car is driven by a cable...Ch. 10 - Keeping in mind the concept from the previous...Ch. 10 - A motorcyclist is able to ride on the vertical...Ch. 10 - When a soaring eagle turns during its flight, what...Ch. 10 - A car resting on a level road has two forces...Ch. 10 - Friction is needed for a car rounding a curve. But...Ch. 10 - Under what conditions could a car remain on a...Ch. 10 - A racing car on a flat circular track needs...Ch. 10 - Can an object move along a curved path if no force...Ch. 10 - When you are in the front passenger seat of a car...Ch. 10 - As a car speeds up when rounding a curve, does...Ch. 10 - Prob. 45ACh. 10 - The sketch shows a coin at the edge of a...Ch. 10 - The sketch shows a conical pendulum. The bob...Ch. 10 - Consider a bicycle that has wheels with a...Ch. 10 - Solve for the tangential speed of a passenger on a...Ch. 10 - Prob. 50ACh. 10 - Megan rides a horse at the outer edge of a...Ch. 10 - Emily rides on a horizontal rotating platform of...Ch. 10 - From the equation F=mv2r, calculate the tension in...Ch. 10 - Answer the previous question for each of the...Ch. 10 - A turntable that turns 10 revolutions each second...Ch. 10 - Harry Hotrod rounds a corner in his sports car at...
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