Physics | Insight Maker

This model shows the different forces that influences a skier speed

Clone of Speed of a skier during a turn with a defined radius

Charles Baril

Grundmodell der Newtonschen Mechanik angewendet auf den freien Fall

Freier_Fall

Prof. Dr. Horst Schecker

Clone of Clone of Pendulum

Hans Niedderer

Clone of Clone of Bomba de golpe de Ariete

Nadia Rocio Ramírez Fernández

Simulation de la température au cours du temps d'une tasse de thé chaud dans lequel on met de la crème à un certain moment, qui peut être librement choisi.

Le challenge est de savoir si, pour garder le thé plus chaud, il vaut mieux mélanger tout de suite la crème, ou attendre le dernier moment juste avant de le boire.

La réponse est obtenue en changeant l'instant du mélange et en comparant les deux simulations à un temps donné (par exemple après 4 minutes).

Refroidissement d'un thé-crème

Jean-Daniel NICOLET

Clone of Clone of Rocket Model

Isaac Donkoh-Halm

This is the first system students have to model in "phyics and system dynamics for aviation". The system consists of a cylindrical pot with a hole in the bottom.

Torricelli's Law

Werner Maurer

Simulation of MTBF with controls

F(t) = 1 - e ^ -λt

Where

• F(t) is the probability of failure

• λ is the failure rate in 1/time unit (1/h, for example)

• t is the observed service life (h, for example)

The inverse curve is the trust time
On the right the increase in failures brings its inverse which is loss of trust and move into suspicion and lack of confidence.
This can be seen in strategic social applications with those who put economy before providing the priorities of the basic living infrastructures for all.

This applies to policies and strategic decisions as well as physical equipment.
A) Equipment wears out through friction and preventive maintenance can increase the useful lifetime,
B) Policies/working practices/guidelines have to be updated to reflect changes in the external environment and eventually be replaced when for instance a population rises too large (constitutional changes are required to keep pace with evolution, e.g. the concepts of the ancient Greeks, 3000 years ago, who based their thoughts on a small population cannot be applied in 2013 except where populations can be contained into productive working communities with balanced profit and loss centers to ensure sustainability)

Early Life

If we follow the slope from the leftmost start to where it begins to flatten out this can be considered the first period. The first period is characterized by a decreasing failure rate. It is what occurs during the “early life” of a population of units. The weaker units fail leaving a population that is more rigorous.

Useful Life

The next period is the flat bottom portion of the graph. It is called the “useful life” period. Failures occur more in a random sequence during this time. It is difficult to predict which failure mode will occur, but the rate of failures is predictable. Notice the constant slope.

Wearout

The third period begins at the point where the slope begins to increase and extends to the rightmost end of the graph. This is what happens when units become old and begin to fail at an increasing rate. It is called the “wearout” period.

Clone of Clone of Clone of Clone of BATHTUB MEAN TIME BETWEEN FAILURE (MTBF) RISK

Alena Peskova

Após uma enchente, um grupo de pessoas ficou ilhado numa região. Um avião de salvamento, voando horizontalmente a uma altura de 720 m e mantendo uma velocidade de v = 50m/s, aproxima-se do local para que um pacote com medicamentos e alimentos seja lançado para as pessoas isoladas. A que distância, na direção horizontal, o pacote deve ser abandonado para que caia junto às pessoas? Despreze a resistência do ar e adote um g = 10m/s².

Fonte: (RAMALHO, NICOLAU E TOLEDO;Fundamentos da Física, Volume 1, 8ª edição, pp. 12 – 169, 2003).

Clique aqui para ver uma descrição do que é Lançamento Horizontal no vácuo.

Lançamento Horizontal no vácuo (ñ)

Claudio Garcia Quirico

24

This model shows the different forces that influences a skier speed

Clone of Clone of Speed of a skier during a turn with a defined radius

Gabriel Poisson

Z203 from System Zoo 1 p88-90

Clone of Brusselator

Sebastian Zander

How gravity and air drag interact to create terminal velocity.

Terminal velocity

David J. Ulrich

resistencia al aire

Carlos Daniel Segundo

Problem of the sliding chain

Clone of Sliding Chain

Justine

Clone of Pendulum

Hans Kratz

The probability density function (PDF) of the normal distribution or Bell Curve of Normal or Gaussian Distribution is the mean or expectation of the distribution (and also its median and mode).

The parameter is its standard deviation with its variance then, A random variable with a Gaussian distribution is said to be normally distributed and is called a normal deviate.

However, those who enjoy upskirts are called deviants and have a variable distribution :)

A random variable with a Gaussian distribution is said to be normally distributed and is called a normal deviate.

If mu = 0 and sigma = 1

If the Higher Education Numbers Are Increased then the group decision making ability of society would be raised above that of a middle teenager as it is now

BUT

Governments can control children by using bad parenting techniques, pandering to the pleasure principle, so they will make higher education more and more difficult as they are doing

85% of the population has a qualification level equal or below a 12th grader, 17 year old ... the chance of finding someone with any sense is low (~1 in 6) and the outcome of them being chosen by those who are uneducated in the policies they are to decide is even more rare !!!

Experience means little if you don't have enough brain to analyse it

Democracy is only as good as the ability of the voters to FULLY understand the implications of the policies on which they vote., both context and the various perspectives. National voting of unqualified voters on specific policy issues is the sign of corrupt manipulation.

Democracy: Where a group allows the decision ability of a teenager to decide on a choice of mis-representatives who are unqualified to make judgement on social policies that affect the lives of millions.

The kind of children who would vote for King Kong who can hold a girl in one hand and swat fighter jets out of teh sky off the tallest building, doesn't have a brain cell or thought to call his own but has a nice smile and offers little girls sweets.

Clone of Clone of The probability density function (PDF) of the normal distribution or Bell Curve Gaussian Distribution by Guy Lakeman

Andang Saefullah

Fall with weight force, air friction force (e.g. an air balloon) and buoyancy force of the balloon in air

Fall of balloon in air with buoyancy force

Hans Niedderer

Bomba hidrodinámica tipo golpe de ariete.

Rocio Hernandez

NOT YET FUNCTIONAL

This is a simple energy balance model of radiation through the atmosphere. It's a simple single layer model.

Version 2 of Greenhouse Effect in the Atmsophere

Hank de Wit

Problem of the sliding chain

Sliding Chain

Jean Caillé

48

LAM Emanuel Apostol. Esperimento 3

Emanuel Apostol

The underlying differential equation for this very minimal model is a non-dimensional version of the equation for an RC circuit, with charge measured in units of C*emf, and time measured in units of RC.

Clone of Charging a capacitor - Non-dimensional model

stefan rümenapp

Clone of Pendulum

Jane Smith

This shows the motion of a driven damped harmonic oscillator, described in terms of the undamped natural frequency, and a frequency gamma that reflects the degree of damping, parameterized as a damping ratio gamma/natural frequency.

The oscillator is driven with a force that is a sine function of time, with a frequency that can be varied, expressed as a forcing ratio driving frequency/natural frequency.

An accurate solution requires a small time step and RK4 as the integration algorithm.

Clone of Driven damped oscillator

Rolf Widmer

Physics Models