Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Friction: Problem Solving

Friction: Problem Solving

Friction is an essential force that influences the motion of objects in daily life. Depending on the situation, it can be either beneficial or problematic. Consider a bus with a mass of three megagrams and its center of mass at a specific point, moving along a banked road at a constant speed. The coefficient of static friction between the tires and the road is 0.5. Find the maximum angle of the banked road at which the bus would not slip or tip.
Initially, a visual representation of the...

Rolling Resistance

Rolling Resistance

When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...

Rolling Resistance: Problem Solving

Rolling Resistance: Problem Solving

Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...

Rolling Without Slipping

Rolling Without Slipping

People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...

Rolling With Slipping

Rolling With Slipping

Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface.
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can affect...

Design Example: Designing Water Slide

Design Example: Designing Water Slide

When designing a water slide, controlling the speed of water flow is crucial for rider safety while maintaining an exciting experience. As water flows down the slide, gravity causes it to accelerate, with its speed at the bottom depending on the height from which it starts. The higher the slide, the more potential energy the water has at the top, which is converted into kinetic energy as it descends, increasing its speed.
Bernoulli's principle determines the water's velocity along the slide.

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por

Same author

Infectious diseases. Bed nets prove their mettle against malaria.

Science (New York, N.Y.)·2001

Same author

Taking anthrax's genetic fingerprints.

Science (New York, N.Y.)·2001

Same author

Anthrax. Can lab sleuths clinch the case?

Science (New York, N.Y.)·2001

Same author

A second anthrax genome project.

Science (New York, N.Y.)·2001

Same author

Bioterrorism. Congress weighs select agent update.

Science (New York, N.Y.)·2001

Same author

Anthrax. Biodefense hampered by inadequate tests.

Science (New York, N.Y.)·2001

Search research articles

Video Experimental Relacionado

Updated: Jul 7, 2026

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

¿En una pendiente resbaladiza hacia la mediocridad?

Science (New York, N.Y.)

|September 6, 2007

Resumen

La ciencia holandesa sobresale en el reconocimiento, pero se enfrenta a desafíos. La disminución de la inversión, la disminución de las carreras científicas y la baja participación femenina pronto pueden causar una escasez de investigadores.

Área de la Ciencia:

La producción científica de los Países Bajos y su prestigio mundial.
Análisis de las tendencias en investigación y desarrollo científico.

Sus antecedentes:

La ciencia holandesa obtiene un alto reconocimiento internacional a través de Premios Nobel y citas.
Existen preocupaciones con respecto a una posible disminución de la competitividad científica de los Países Bajos.

Objetivo del estudio:

Evaluar el estado actual y la trayectoria futura de la investigación científica en los Países Bajos.
Para identificar los factores clave que afectan a la vanguardia científica de la nación.

Principales métodos:

Análisis de datos históricos sobre el gasto en ciencia en las últimas dos décadas.
Examen de las tendencias en la popularidad de las carreras científicas.
Evaluación de las tasas de participación femenina en los campos científicos.

Más Videos Relacionados

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

Videos de Experimentos Relacionados

Last Updated: Jul 7, 2026

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

Principales resultados:

Los Países Bajos han disminuido su posición como el principal gastador en ciencia.
Las carreras científicas se están volviendo menos populares.
La subrepresentación de las mujeres en la ciencia persiste a niveles preocupantes.

Conclusiones:

Las tendencias observadas pueden conducir a una escasez significativa de investigadores en el futuro cercano.
Se necesita una atención urgente para abordar la disminución de la inversión y la participación para mantener la excelencia científica.