Purchase Solution

Rotational dynamics: Rolling of ring and disc from incline

Not what you're looking for?

Ask Custom Question

A solid disk and ring of the same mass and radius start from rest at the top of an incline. both of them start from the same vertical height of 0.5m and roll down an incline.

Which of these reach the bottom first? Give reason.

Find the speed of the disk when it reaches the bottom of the incline.

Purchase this Solution
Solution Summary

Comparing angular velocity and accelerations of ring and disc of same mass and radius.

Solution Preview

Please see the attached file.

A solid disk and ring of the same mass and radius start from rest at the top of an incline. both of them start from the same vertical height of 0.5m and roll down an incline.
Which of these reach the bottom first? Give reason.
My quess was that the solid disk would reach the bottom first because it is more arrow dynamic(??). could you tell me if that is right.
Find the speed of the disk when it reaches the bottom of the incline.
what equation do I use and how do I set it up.

Answer.
The objects are rolling down the incline without sliding due to friction that is providing necessary torque about the axis of rotation. ...

Purchase this Solution
Free BrainMass Quizzes
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.

Basic Physics

This quiz will test your knowledge about basic Physics.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

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.

View More Free Quizzes
Related BrainMass Solutions

  • Mechanics: Dynamics (Translational and rotational motion).

    A ring is rolling on a horizontal surface at speed v0 when it reaches a theta- incline. How far along the incline will it go? How long will it be on the incline before arriving back at the bottom? 4.

  • Rotational Dynamics

    211882 Four problems on rotational dynamics 1) How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.3 cm and a mass of 15.1 g.

  • Ball Rolling up an Incline

    38323 Ball Rolling up an Incline A 10.0 kg bowling ball of radius 15 cm rolls without slipping along a horizontal surface with a speed of 4.0 m/s as it approaches an incline.

  • Rotational Kinematics

    9463 Rotational Kinematics A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4.2 m down a q = 23° incline. The sphere has a mass M = 4.1 kg and a radius R = 0.28 m.

  • Rigid Body Dynamics

    . 3.38 m down the slop from A and 1.42 m up the slop from A.

  • Angular Velocity and Mass

    We know that a rolling ring has two types of kinetic energies: a rotational kinetic energy due to its rotation about its center of mass and translational kinetic energy due to transfer of its center of mass.

  • Linear velocity of cylinders when rolling down an incline

    154452 Linear velocity of cylinders when rolling down an incline A thin cylindrical shell and a solid cylinder have the same mass and radius.

  • speed of solid disk rolling down an incline

    116778 Speed of Solid Disk Rolling Down an Incline A solid disk is released from rest and rolls without slipping down an inclined plane that makes an angle of 25.0 with the horizontal.

  • Rolling of round objects down an incline and torque

    Final total energy = transnational kinetic energy + rotational kinetic energy By conservation of energy, mgh = 1/2 m v^2 + 1/2 I w^2 where I is the moment of inertia and w is the angular velocity at the bottom of the incline. v is the linear

View More Related Solutions