En este trabajo se presentan los resultados de una propuesta educativa orientada a
promover el desarrollo de un pensamiento critico y un mayor interes por las ciencias …

We studied the motion of a variable mass oscillator. The mass used is a container full of
sand that loses sand at a constant rate and hangs from a spring. The spring was suspended …

A global, bi‐homogeneous, observer for a class of 1‐DOF mechanical systems with Coriolis
and centrifugal forces, dry and viscous frictions and non‐vanishing bounded uncertainties …

The Atwood machine was invented in 1784 by George Atwood and this system has been
widely studied both theoretically and experimentally over the years. Nowadays, it is …

As propulsive systems are challenging for undergraduates to understand, it is essential to
design experiments that can help their visualization and testing. The development of digital …

This paper presents an experimental study of the dynamics of a chain sliding off of a table,
using video analysis to test a theoretical model. The model consists of two variable-mass …

Atwood's treatise, in which the Atwood machine appears, was published in 1784. About 70
years later, Poggendorff showed experimentally that the weight of an Atwood machine is …

Atwood invented a machine in the 1780s that enabled him to observe the motion of a falling
body as slowly as desired. This machine was equipped with the necessary means to …

Article available http://www. europhysicsnews. org or http://dx. doi. org/10.1051/epn/
2010302 statics. e z-coordinate of the com of all of the sand in the hourglass is found to be …

With the advent of smart materials, the concept of semi-active control or dynamic control of
stiffness and/or damping for vibration control of structures has become practical and has …