   Chapter 8, Problem 39P

Chapter
Section
Textbook Problem

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a friction less, vertical axle. A constant tangential force of 250. N applied to its edge causes the wheel to have an angular acceleration of 0.940 rad/s2.(a) What is the moment of inertia of the wheel? (b) What is the mass of the wheel? (c) If the wheel starts from rest, what is its angular velocity after 5.00 s have elapsed, assuming the force is acting during that time?

(a)

To determine
The moment of inertia of the wheel.

Explanation

Given info: The radius of the wheel is 0.330m , the constant tangential force is 250N , and the angular acceleration of the wheel is 0.940rad/s2 .

Explanation: The torque of the large grinding wheel is τ=rFsinθ=Iα and as the angle of the force is tangential to the wheel, sinθsin90°=1 .

The formula for the moment of inertia of the wheel is,

I=rFα

• r is radius of the wheel.
• F is tangential force.
• α is angular acceleration of the wheel.

Substitute 0.330m for r , 250N for F , and 0

(b)

To determine
The mass of the wheel.

(c)

To determine
The angular velocity of the wheel.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

True or false? Ribosomes are only found in eukaryotes.

Biology: The Unity and Diversity of Life (MindTap Course List)

What makes up a system of units?

An Introduction to Physical Science

Does the cell cycle refer to mitosis as well as meiosis?

Human Heredity: Principles and Issues (MindTap Course List) 