Mostrando ítems 1-6 de 6

Building a high quality photogate

Ladino, Luis Alejandro; Rondon, Hermilda Susana (IOP Publishing LtdBristol, Reino Unido., 2019)

In this paper we present a method to construct a simple, sturdy and inexpensive photogate to be used in elementary physics laboratories. The great advantage of the proposed design is that it has no transmitter-receiver ...
Building a propeller based-microcontroller timer system

Ladino, Luis Alejandro; Rondon, Hermilda Susana (IOP Publishing LtdBristol, Reino Unido., 2019)

In this work we construct a timer system consisting of both hardware and software to be used in introductory-level laboratory physics courses. The Parallax P8X32A propeller based-microcontroller hardware consist of a board ...
Determining the damping coefficient of a simple pendulum oscillating in air

Ladino, Luis Alejandro; Rondon, Hermilda Susana (IOP Publishing LtdBristol, Reino Unido., 2017)

A systematic method to measure the damping coefficient of a simple pendulum carrying out small oscillations using the resonance phenomena is considered. The method only requires a standard function generator, a simple ...
In search of the dimensions of an incandescent light bulb filament

Ladino, Luis Alejandro; Rondon, Hermilda Susana (IOP Publishing LtdBristol, Reino Unido., 2018)

The purpose of this paper is to present and discuss an alternative solution to an experimental problem given to high school students in the XXII Ibero-American Physics Olympiad held by Colombia this year. From the measurements ...
Rolling sphere along an inclined multi-slotted track

Ladino, Luis Alejandro (IOP Publishing LtdBristol, Reino Unido., 2020)

In this work we study the motion of a small metal ball along an inclined multi-slotted track. Specifically, the effect of the slot width on the ball speed at the lower part of the track is analyzed in detailed both ...
Simulation using Excel: reservoirs exchanging heat through a conducting rod

Ladino, Luis Alejandro (IOP Publishing LtdBristol, Reino Unido., 2020)

In this work we discuss the intricacies of a simulation using the MS Excel spreadsheet that allows to study in detail the process of heat transfer between two reservoirs at different temperatures through a conducting rod ...

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Building a high quality photogate
...
Ladino, Luis Alejandro | 2019

In this paper we present a method to construct a simple, sturdy and inexpensive photogate to be used in elementary physics laboratories. The great advantage of the proposed design is that it has no transmitter-receiver alignment related problem at all and the receiver is nicely encapsulated which prevents any spurious light triggering the photogate electrical circuit. The design can be easily modified to build larger photogates than those currently on the market.

LEER
Building a propeller based-microcontroller timer system
...
Ladino, Luis Alejandro | 2019

In this work we construct a timer system consisting of both hardware and software to be used in introductory-level laboratory physics courses. The Parallax P8X32A propeller based-microcontroller hardware consist of a board that registers the times of events triggered when IR photogates are blocked and unblocked. The software allows the user to configure the system in four different timing modes, namely, gate, pulse, pendulum, and gate pulse. Both the programming code for the microcontroller and the software that commands the hardware are provided to make the system easy to implement at low cost.

LEER
Determining the damping coefficient of a simple pendulum oscillating in air
...
Ladino, Luis Alejandro | 2017

A systematic method to measure the damping coefficient of a simple pendulum carrying out small oscillations using the resonance phenomena is considered. The method only requires a standard function generator, a simple pendulum and a loudspeaker. The results obtained from this experiment show that the damping coefficient is very small, which is confirmed by the observed beats.

LEER
In search of the dimensions of an incandescent light bulb filament
...
Ladino, Luis Alejandro | 2018

The purpose of this paper is to present and discuss an alternative solution to an experimental problem given to high school students in the XXII Ibero-American Physics Olympiad held by Colombia this year. From the measurements of electric current and potential difference across a small tungsten filament lamp students should find the dimensions of its filament. The results obtained are compared with the ones measured directly. This challenging and low-cost experiment can be easily implemented and carried out in any introductory physics laboratory courses.

LEER
Rolling sphere along an inclined multi-slotted track
...
Ladino, Luis Alejandro | 2020

In this work we study the motion of a small metal ball along an inclined multi-slotted track. Specifically, the effect of the slot width on the ball speed at the lower part of the track is analyzed in detailed both analytically and experimentally. Experimental results are in satisfactory agreement with the theoretical model.

LEER
Simulation using Excel: reservoirs exchanging heat through a conducting rod
...
Ladino, Luis Alejandro | 2020

In this work we discuss the intricacies of a simulation using the MS Excel spreadsheet that allows to study in detail the process of heat transfer between two reservoirs at different temperatures through a conducting rod when heat losses are neglected. The proposed physical model computes the time dependence of the reservoir temperatures and delivers reasonable results. This simulation can be used in a first year course in general physics.

LEER