Purchase Solution

Finding the ratio between two velocities down a ramp.

Not what you're looking for?

Ask Custom Question

A marble and a cube are placed at the top of a ramp. Starting from rest at the same height, the marble rolls and the cube slides (no kinetic friction) down the ramp. Find the ratio of the center-of-mass speed of the cube to the center-of-mass speed of the marble at the bottom of the ramp.

Purchase this Solution

Solution Preview

<br>The rolling marble has a friction force acting on it at the point of contact, (otherwise it would slide, not roll). We take the point of contact as a reference axis, and apply 'net torque about that axis = (moment of inertia about that axis) x (angular acceleration of the marble).
<br>The net torque about that axis is:
<br>(1) '(M g ...

Purchase this Solution


Free BrainMass Quizzes
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.

Basic Physics

This quiz will test your knowledge about basic Physics.

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.