Name: mechanics in physics and engineering
Uploaded: 2023-09-22T11:49:18.000Z
Duration: 1 min 28 s
Channel: JoVE

K12 Standards

Arizona Science Standards

High School

Physical Science

HS.P3

HS.P3U2.7

An Introduction to Mechanics

La meccanica è una branca della scienza fisica che si occupa dello studio dello stato di un oggetto fermo o in movimento sotto l'azione di forze.
T è generalmente classificato come meccanica del corpo rigido, meccanica del corpo deformabile e meccanica dei fluidi.
La meccanica dei corpi rigidi studia quegli oggetti in cui la deformazione è trascurabile sotto l'azione delle forze.
Può essere ramificato in statica e dinamica. La statica si occupa dello stato degli oggetti in quiete, mentre la dinamica si occupa degli oggetti in movimento.
La dinamica è ulteriormente suddivisa in cinematica e cinetica, dove le forze responsabili del movimento sono rispettivamente trascurate e considerate.
La meccanica dei corpi deformabili studia la deformazione di un oggetto sotto l'azione di forze.
Lo studio del moto e delle forze dei fluidi è chiamato meccanica dei fluidi. È ulteriormente classificato in fluidi comprimibili e incomprimibili.
La progettazione e l'analisi di strutture come edifici, molle a balestra nelle automobili, ganci per gru, pistole sparachiodi pneumatiche, sistemi di frenatura idraulica e robot industriali si basano sui principi della meccanica.

<ol>
	<li>Hibbeler, R.C. (2016). Ingegneria Meccanica \u2012 Statica e Dinamica. Hoboken, New Jersey: Pearson Prentice Hall. pp 3 \u2012 4</li>
	<li>Birra, F.P.; Johnston, E.R.; Mazurek, D.F; Cromwell, P.J. e Self, B.P. (2019). Meccanica vettoriale per ingegneri \u2012 Statica e dinamica. New York: McGraw-Hill. pp 2 \u2012 3</li>
	<li>Meriam, J.L.; Kraige, LG e Bolton, JN (2020). Ingegneria Meccanica \u2012 Statica. Hoboken, New Jersey: John Wiley. pp 1 \u2012 2</li>
</ol>

un'introduzione alla meccanica

Gli esseri umani hanno costruito navi, rifugi, piramidi, armi, attrezzature agricole e molti altri oggetti per secoli senza tenere traccia dei processi o delle teorie che ne erano alla base. Sarebbe difficile documentare l'evoluzione della meccanica dalle origini fino ad oggi.

Secondo i documenti, la storia della meccanica inizia con Aristotele (384-322 a.C.). Fu lui a collegare la meccanica alla teoria fisica, mirando a una sintesi universale.

Newton definì la meccanica come la branca delle scienze fisiche che studia lo stato di un oggetto in quiete o in movimento, sotto l'azione delle forze. La meccanica è un'area fondamentale della fisica con significative applicazioni in vari settori dell'ingegneria e della scienza. Lo studio della meccanica è essenziale per capire il movimento degli oggetti della vita quotidiana, il comportamento di macchine e dispositivi e il funzionamento di diversi sistemi.

La meccanica dei corpi rigidi è un ramo che si occupa di oggetti in cui la deformazione è trascurabile sotto l'azione di forze. La meccanica dei corpi rigidi può essere divisa nei rami della statica e della dinamica. La statica si occupa dello stato degli oggetti in quiete, mentre la dinamica si occupa degli oggetti in movimento. La dinamica è ulteriormente divisa in cinematica e cinetica: la prima trascura le forze responsabili del movimento, mentre la seconda le considera.

La meccanica dei corpi deformabili, invece, si concentra sulla deformazione di un oggetto sotto l'azione di forze. Comprendere il comportamento dei materiali, come quelli utilizzati nell’edilizia o nella produzione, e la progettazione e l'analisi di diverse strutture è cruciale.

La meccanica dei fluidi è lo studio del movimento e delle forze dei fluidi. È un campo vasto che si suddivide in fluidi comprimibili e incomprimibili, a seconda del relativo comportamento. La meccanica dei fluidi ha molte applicazioni pratiche ed è utilizzata nella progettazione e nell'analisi di vari sistemi, come sistemi idraulici o pneumatici, sistemi di trasporto dei fluidi e attrezzature per il trattamento chimico.

Molte strutture e macchine vengono progettate ed analizzate basandosi sui principi della meccanica. Ad esempio, la progettazione di edifici, ponti e altre strutture dipende dai principi della meccanica per quanto riguarda la valutazione della resistenza dei materiali, delle forze di gravità e del movimento della terra. I principi della meccanica sono anche utilizzati nella progettazione di componenti automobilistici, come molle a balestra e sistemi di frenatura idraulici, ganci per gru, robot industriali e sparachiodi pneumatiche.

Un'introduzione alla meccanica

Gli esseri umani hanno costruito navi, rifugi, piramidi, armi, attrezzature agricole e molti altri oggetti senza registrare il processo o la teoria dietro ...

Education

Didattica

JoVE Core

Mechanical Engineering

Ingegneria Meccanica

Unit 1

Unità 1

An Introduction to Statics

Introduzione alla statica

KEY TERMS AND CONCEPTS

TERMINI E CONCETTI CHIAVE

mechanics in physics and engineering

Mechanics is a key branch of physics that explains how objects stay at rest or move when forces act on them. It also has major uses in engineering and science. The topic helps students understand everyday motion, machine behavior, and the way many systems work.

The recorded history of mechanics begins with Aristotle, who lived from 384 to 322 BC. He linked mechanics with physical theory and looked for a broad universal explanation. Later, Newton defined mechanics as the study of objects at rest or in motion under the action of forces.

Rigid body mechanics deals with objects that do not deform much when forces act on them. This area is divided into statics and dynamics. Statics studies objects at rest, while dynamics studies objects in motion.

Dynamics is further divided into kinematics and kinetics. Kinematics describes motion without focusing on the forces that cause it. Kinetics includes those forces and explains how they affect motion.

Deformable body mechanics focuses on how objects change shape under force. This is important for understanding materials used in construction and manufacturing. It also helps in the design and analysis of structures.

Fluid mechanics studies the motion of fluids and the forces within them. It is often divided into compressible and incompressible fluids, based on how the fluid behaves. This field is used in hydraulic and pneumatic systems, fluid transportation, and chemical processing equipment.

Principles of mechanics guide the design of many structures and machines. Buildings and bridges are analyzed for material strength, gravity, and earth movement. The same ideas also apply to automobile leaf springs, hydraulic braking systems, crane hooks, industrial robots, and pneumatic nail guns.

Mechanics in Physics and Engineering

an introduction to mechanics

Mechanics is a key branch of physics that explains how objects stay at rest or move when forces act on them. It also has major uses in engineering and science. The topic helps students understand everyday motion, machine behavior, and the way many systems work. The recorded history of mechanics begins with Aristotle, who lived from 384 to 322 BC. He linked mechanics with physical theory and looked for a broad universal explanation. Later, Newton defined mechanics as the study of objects at...

basic concept

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numerical calculations

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Accuracy and approximation are important in calculations, especially in engineering. Accuracy means how close a measured value is to the true or actual value. Repeated measurements are often used in engineering mechanics to help make results more precise and accurate. The accuracy of a solution depends on empirical data and the results from different calculations or measurements. A cylindrical container filled with liquid is a simple example. Its volume can be found from the measured...

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mechanical engineering

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Newton's Second Law

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HS.P3U1.6

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Mechanics in Physics and Engineering

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