Physics: Kinetic energy applied to a roll of paper towel with force applied tangentially.
Not what you're looking for?
See attached file.
A roll of paper towels is a uniform hollow cylinder, mass M=.75 kg, outer radius Ro=.084 m, inside radius of the hollow core Ri=.036 m. The roll is mounted on frictionless bearings.
See attachment #1 for a picture showing parameters.
By pulling on the paper towel with a tangential force P=.25 nt, starting at rest, the roll is thus given initial angular acceleration Ao.
a. Find the kinetic energy of the rotating roll at the end of t= 5.2 seconds. (Assume that the outer radius does not change during this time.)
b. When exactly half of the roll has been removed, with the same force P applied tangentially, find the angular acceleration Af.
Purchase this Solution
Solution Summary
The solution provides a step-by-step procedure to arrive at the answer, but also works the problem in an attachment.
Solution Preview
See file attached.
Solution procedure: For your most benefit, follow the procedure given below before you look at the correct solution equations provided in attachment #2.
part a.
Step 1. Recall or develop the initial moment of ...
Purchase this Solution
Free BrainMass Quizzes
Variables in Science Experiments
How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.
The Moon
Test your knowledge of moon phases and movement.
Classical Mechanics
This quiz is designed to test and improve your knowledge on Classical Mechanics.
Intro to the Physics Waves
Some short-answer questions involving the basic vocabulary of string, sound, and water waves.
Introduction to Nanotechnology/Nanomaterials
This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.