WITHOUT GRAVITYIs the astronauts' life difficult?

Science is only physics, everything else is merely a collection of stamps. (Ernest Rutherford)

We should learn from each other so that we can teach as well as possible. (LorándEötvös)

Languages:

SOLUTIONGRAVITY SPACE SUIT

• Adjustable strength - spring tensioners

we stretch rubber ropes out :

• Helmet - shoulder;

• Shoulder - waist;

• Arm - waist;

• Waist - shoes.

• So, to maintain a straight body will require muscle strength.

• The spring tensioners are adjustable, with which you can adjust your body weight.

• The shoe adheres magnetically to the walking surface,which will require muscular work.

A spring mechanism for tensioning the rubber threads

FOLLOWING THE GALILEI METHOD

• Galileo was the first to introduce modelling, the abstraction, which in

addition to physics is used by the other natural sciences, and today it is

even used in many social science research methods.

• According to Galileo's approach, it is advisable to look at the

phenomena in simplistic circumstances by means of thought

experiments, which can not be observed in reality. Then we have to take

into account the role of the real effects in the actual course of the

phenomenon.

• Apply Mathematics and then try to experiment.

The theory and the experiment complete each other!

Teaching Natural Sciences (Szerk. Radnóti Katalin – Mozaik Kiadó – Szeged, 2014.)

WITHOUT EARTH GRAVITY WHICH IS HABITUAL FOR OUR BODIES

• Why?

Goals and Grounds to Leave the Earth

• Research and discovery

• Bringing man into space,

the conquest of space

(Space Applications)

• Space station (research work)

• Mars trip

• Researching new energy sources

• Sending robots instead of man

• Find a new home

• If we destroy the Earth

(pollution)

• Use of research results

for healing diseases

IF THERE IS NO GRAVITY

• Experience so far:

• Harmful effects on people

(we have already known how to delay them, but we cannot defend them

yet)

• After several weeks in space, the body shows the signs of decay

• Fast muscular dystrophy

• Body muscle mass distribution changes

• Osteoporosis

• Changes in blood circulation

• Solutions to date:

• In the outer space, the muscles need to be burdened in some ways, then

the congestion can be slowed down

• Calcium buildup helps slowing down osteoporosis

• Special clothing (pressure distribution to assist blood pressure)

PREVIOUS KNOWLEDGE

• Gravity on Earth

(Newton, Einstein, LIGO) – Our current theoretical knowledge - research work.

• Space trials (space station, spaceship)

• Experiments on the Moon

Mobilizing prior knowledge when observing the world around us

The moon has the same gravitational attraction on the Earth's path as the force which forces the bodies to fall to the ground. (the 23 years old Newton)

THE CONSEQUENCES OF GRAVITY

• (1) The bodies fall freely not just on the surface of the Earth,

but on the surface of every planet. The value of their

acceleration depends on the data of the planet,

on the Moon ca. 1,6 m/ s2. (on the Earth 9,8 m/s2)

• (2) Holding force should be exerted on the resting bodies so they

also exert force on the bodies that hold them!

• The weight of the body is called the force it exerts on the other

body that holds it.

(This should be replaced by our gravity space suit! So helping

our muscles work.)

MOVEMENT IN THE USUAL EARTH GRAVITY

• The role of friction:

• Pressing force (role of gravity)

• Surface quality

About 650 muscles make up our muscles, butfor example, about 200 of them are used during walking.

MOVE WITHOUT FRICTION

MAGLEV

The levitating magnet rail called Maglev is a kind of rail system in which keeping the vehicles on the railand

making them move is done by a magnet field with thehelp of the magnet levitation instead of thetraditional wheels.

It is possible to achieve more than 500 kms/hour likein case of planes with this method.

The magnet field is used by the magnet for lifting and propulsion, so friction is reduced and higher speed is available.

MOVEMENT IN SPACE

• Rocket, Space Boat, Space Station

• On other planets - different gravity forces

• Gravity replacement solutions

(Velcro fastener, magnet, rubber rope)

STRUCTURE OF OUR BODYKinematics: (body, muscles, joints, energy, movement)

The skeleton and the muscles

HUMAN BODY CENTER OF GRAVITY AND WALKING TEST

Dempster's center of gravity

determination technique

center of

gravity

contact angle

bottom

contact

center

position take-

off

Supporting phase Swinging phase

acceleration

mid-

swing

forward swing

OUR EXPERIMENTAL MEASUREMENTS

• Human body size and weight ratio, balance (skeleton, center of gravity),

movement (2x, 3x load),

• Walking (friction) - Velcro-fast, magnetic solution

• Weight measurement - the mass ratio of our body and body parts

(For custom-fit clothing), body weight,

• Measurement of muscle strength (for adjusting the tension of the

rubber ropes)

• Measurements in motion

• Recording measurement results - generalization

We're on giants' shoulders!

" It is important to measure everything measurable and try to make it measurable, which is

not yet." (Galileo Galilei)

BODY PART – BODY WEIGHT RATIO MEASUREMENTS

• Balance sheet operating principle, types

• Weighing scales

• Measuring body parts with scales

• Measurement errors

Good God, I've done wrong for years!

How to measure ourselves correctly …

body weight (kg) 51,10 100% 42,60 100% 47,00 100%

head (kg) 4,00 7.8% 3,50 8.2% 3,80 8.08%

right arm (kg) 2,80 5.6% 2,60 6.1% 2,90 6.1%

left arm (kg) 2,60 5.09% 2,50 5.8% 2,50 5.3%

right leg (kg) 8,70 17.05% 6,90 16.2% 6,80 14.4%

left leg (kg) 8,60 16.8% 6,70 15.7% 6,60 14.04%

body (kg) 24,40 47.8% 20,40 48.0% 24,40 52.1%

Body part weight ratios (measurement, calculation)

Niki Ádám Zsófi

GRAVITY SPACE SUIT 1.

• Predictions, hypotheses :

• Is it possible to make a gadget built in space suits which can be used to substitute the effect of

ground gravity on walking muscles?!

• BrainStorming:

• Solutions suggestions and ideas

• Rubber, elastic spring energy - adjustable force

• Spiral spring tensioning devices - adaptive to muscle strength

• Problems encountered:

• Materials suitable for space relations: clothing, tensioners, rubber band, spring

• Setting for weight

• Stretching while walking, tension during sitting

The formulation of a question that is appropriate for the investigation;

formulating predictions and hypothesis

GRAVITY SPACE SUIT 2.

• Modelling - small, refinement of the idea, feasibility study

• Building a model

• Making a proportionate human model

• Dress design (design and modelling of structural

and supporting elements)

• Prototype building (problems)

• Selection of materials

• testing

4. Planning the measurement (experimental and control groups);5. Creating the necessary measuring equipment;6. Collecting data;7. Data capture, table design;8. Evaluation of data or graphic representation;9. Deduction of conclusions, comparison with the preliminary ideas;

Golden ratiobody: 2 units

arm: 3 units

body+arm: 5 units

height: 8 units

PRESENTING OUR MODEL

• Steps to build a model :

• paper box– man model (ratios)

• paper box– rubber band dress

• paper box– magnetic shoes

• Tensioner structure model

• Structure of clothes

• Model making

SUMMARY

• Progress Plans

• Making a prototype,

• Measurements with the Prototype

• Design, modelling of spring-loaded, rubber-filled gym,

• MAGLEV Boots or Velcro or Magnetic (benefits, disadvantages))

10.The publication of the results, answering the questions, considering the new knowledge we got, formulating practical suggestions;

11.Formulating questions that may be suitable for further investigations.

IRODALOMJEGYZÉK/ BIBLIOGRAPHY

• Tankönyvek

• Fizika 7 – Mechanika, hőtan (Mozaik Kiadó – Szeged, 2016.)

• Fizika I. – Gulyás János, Honyek Gyula, Markovits Tibor, Szalóki Dezső, Tomcsányi Péter, Varga Antal (Műszaki Kiadó, Budapest 2010.)

• A természettudomány tanítása (Szerk. Radnóti Katalin – Mozaik Kiadó – Szeged, 2014.)

• Az anyagi világ felfedezése – Az én módszertáram – Fizika, Kémia (RAABE Tanácsadó és Kiadó Kft., Budapest)

• Internet

• http://tudasbazis.sulinet.hu/hu/termeszettudomanyok/fizika/fizika-9-evfolyam/a-tomegvonzas/az-altalanos-tomegvonzas-torvenye

• http://tudasbazis.sulinet.hu/hu/termeszettudomanyok/fizika/fizika-7-evfolyam/surlodas/a-surlodasi-ero-nagysaga

• https://hu.wikipedia.org/wiki/Rug%C3%B3

• http://www.tankonyvtar.hu/hu/tartalom/tamop425/2011_0001_524_Biofizika/ch05s02.html

• https://hu.wikipedia.org/wiki/Lebeg%C5%91_m%C3%A1gnesvas%C3%BA

• http://www.puskas.hu/diak_erettsegi/anyagok/Fizika_2007/temak/03_erohatasok_erotorv/temakor.htm

• http://www.tankonyvtar.hu/hu/tartalom/tamop412A/2010-0013_kenesgazdalkodas/a_surlodas_fogalma.html

• http://www.hirosnaptar.hu/index.php?oldal=cikk&cikk=vallomasok__dr__remes_peter_orvos_ezredes

• http://nol.hu/tud-tech/20110122-komoly_gondokat_okozhat_a_gravitacio_hianya-954611

KÉSZÍTETTÉK/ CREATED BY

Nikolett Árpási, Ádám Steiner, Zsófia Fáklyabalatom.wordpress.com

Felkészítő tanár / preparatory teacher: Balaton Tamás fizika, informatika tanár / teacher of physics and IT

Kardos István Általános Iskola és Közgazdasági Szakgimnázium, Szigetszentmiklós

2017. május / May, 2017