Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 12: Q. 8 (page 330)

A 100g ball and a 200 g ball are connected by a , 30- cm long massless, rigid rod. The balls rotate about their center of mass at 120 rpm. What is the speed of the 100 g ball?

Short Answer

Expert verified

The speed of the 100 g ball is v1=2.5m/s

Step by step solution

01

Step 1. Given information

A distance between balls, 30cm, an angular velocity 120rpm, and the mass for each ball.

02

Step 2. Explanation

The center of mass of the two balls measured from the left hand ball is

xcm=(100g)(0cm)+(200g)(30cm)100g+200g=20cm

The linear speed of the ball is

v1=rω=xcmωv1=(0.20m)(120rev/min)2πradrevmin60sv1=2.5m/s

Therefore, the speed of the 100g ball isv1=2.5m/s

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A thin, 100g disk with a diameter of 8.0 cm rotates about an axis through its center with 0.15 J of kinetic energy. What is the speed of a point on the rim?

How fast, in rpm, would a 5.0kg22cmdiameter bowling ball have to spin to have an angular momentum of 0.23kgm2/s?

A 120-cm-wide sign hangs from a 5.0 kg, 200-cm-long pole. A cable of negligible mass supports the end of the rod as shown in Figure P12.62. What is the maximum mass of the sign if the maximum tension in the cable without breaking is 300 N?

Determine the moment of inertia about the axis of the object shown in FIGURE P12.51.

The three masses shown in FIGURE EX12.7 are connected by massless, rigid rods. What are the coordinates of the center of mass?
See all solutions

Recommended explanations on Physics Textbooks

Measurements

Read Explanation

Linear Momentum

Read Explanation

Nuclear Physics

Read Explanation

Electric Charge Field and Potential

Read Explanation

Electricity

Read Explanation

Solid State Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free