Solution Found!

Physics / Physics: Principles with Applications 6 / Chapter 8 / Problem 61P

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Change Question

Answer: A person of mass 75 kg stands at the center of a

Chapter 2, Problem 61P

(choose chapter or problem)

Get Unlimited Answers

QUESTION:

A person of mass \(75 \mathrm{~kg}\) stands at the center of a rotating merry-go-round platform of radius \(3.0 \mathrm{~m}\) and moment of inertia \(920 \mathrm{~kg} \cdot \mathrm{m}^2\). The platform rotates without friction with angular velocity \(2.0 \mathrm{rad} / \mathrm{s}\). The person walks radially to the edge of the platform.

(a) Calculate the angular velocity when the person reaches the edge.

(b) Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk.

Questions & Answers

QUESTION:

A person of mass \(75 \mathrm{~kg}\) stands at the center of a rotating merry-go-round platform of radius \(3.0 \mathrm{~m}\) and moment of inertia \(920 \mathrm{~kg} \cdot \mathrm{m}^2\). The platform rotates without friction with angular velocity \(2.0 \mathrm{rad} / \mathrm{s}\). The person walks radially to the edge of the platform.

(a) Calculate the angular velocity when the person reaches the edge.

(b) Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk.

ANSWER:

Step 1 of 4

Part (a)

Apply the conservation of angular momentum. The equation can be expressed as,

Study Tools You Might Need

Chapter: 14 Problem: 40P

Introductory Chemistry 5
Write a neutralization reaction for each acid and base pair. (a) HF(aq) and \(\mathrm{Ba(OH)_2}\)(aq) (b) \(\mathrm{HClO_4}\)(aq) and NaOH(aq) (c) HBr(aq) and \(\mathrm{Ca(OH_2)}\)(aq) (d) HCl(aq) and KOH(aq)

Chapter: 10 Problem: 10.31

Classical Mechanics 0
Consider an arbitrary rigid body with an axis of rotational symmetry, which we'll call i. (a) Prove that the axis of symmetry is a principal axis. (b) Prove that any two directions x and Sr perpendicular to i and each other are also principal axes. (c) Prove that the principal moments corresponding t

Chapter: 1 Problem: 1.30

Physics for Scientists and Engineers: A Strategic Approach, Standard Edition (Chs 1-36) 4
You are watching a jet ski race. A racer speeds up from rest to 70 mph in just a few seconds, then continues at a constant speed. Draw a basic motion diagram of the jet ski, using images from the video, from 10 s before reaching top speed until 10 s afterward.

Chapter: 1 Problem: 1.39

Chemistry 12
Carry out the following conversions: (a) 22.6 m to decimeters, (b) 25.4 mg to kilograms, (c) 556 mL to liters, (d) 10.6 kg/m3 to g/cm3 .

Chapter: 7 Problem: 4

Probability and Statistics 4
Suppose that the lifetime of a certain type of lamp has an exponential distribution for which the value of the parameter is unknown. A random sample of n lamps of this type are tested for a period of T hours and the number X of lamps that fail during this period is observed, but the times at which t

Chapter: 10 Problem: 16

Anatomy & Physiology 1
Muscle fatigue is caused by ________. a. buildup of ATP and lactic acid levels b. exhaustion of energy reserves and buildup of lactic acid levels c. buildup of ATP and pyruvic acid levels d. exhaustion of energy reserves and buildup of pyruvic acid levels

Chapter: 3 Problem: 11

Principles of Macroeconomics 6
Bill and Hillary produce food and clothing. In an hour, Bill can produce 1 unit of food or 1 unit of clothing, while Hillary can produce 2 units of food or 3 units of clothing. They each work 10hours a day. a. Who has an absolute advantage in producing food? Who has an absolute advantage in producing

Chapter: 8 Problem: 2

Urban Economics 8
Households in Metro differ in their demand for public schools: Half are low demanders (L ) and half are high demanders ( H ). In addition, houses differ in value: Half are expensive (E ) and half are cheap ( C ). The location choices of households are based on property taxes and spending on public sc

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

×

Register

Sign up for access to all content on our site!

Or login if you already have an account