This work presents a review of the formulation for computer simulation based on the discrete
element method to analyze granular materials and a validation of the method using different …

In the research area of granular materials, the friction coefficients between a single particle
and a container wall have a substantial influence on many research areas. The coefficients …

The trajectory of a ball rolling across an inclined plane was recorded on video film to
determine if it followed a parabolic path as others have suggested. The challenges in this …

We discuss the angular velocity (ω) and angular acceleration (α) associated with a particle
in rectilinear motion with constant acceleration. The discussion was motivated by an …

In this paper the classical well-known solution of the elementary problem of the sphere loop
in the presence of friction is studied. Also, a modification of the problem shows a possible …

Este trabalho faz um estudo comparativo entre as velocidades de rolamento de uma esfera
de aço num plano inclinado com lançamento oblíquo. Para determinar a velocidade final no …

The two-dimensional motion of an object on a moving rough horizontal plane is investigated.
Two cases are studied: the plane having a translational acceleration, and a rotating plane …

Finding an optimum strategy to reach a certain destination by swimming in a background
flow is an interesting question that leads to non-trivial results and swimming paths. Here we …

A quantitative experiment where we measure the acceleration of spheres of radius R rolling
on an inclined U-shaped profile of width 2D is presented. For a given inclination, we …

We consider in this paper the motion of an inclined cylinder on an inclined plane. At low
inclined plane angles, the cylinder rolls without slip** across the incline, in a direction …