Statics Chapter 1 Flashcards

Questions and Answers

What is mechanics?

Study of bodies that are at rest or move with constant velocity.

How many branches can mechanics be divided into?

How many branches can rigid-body mechanics be divided into?

What does rigid-body mechanics deal with?

Statics and dynamics. Signup and view all the answers

A rigid body deforms under load.

False Signup and view all the answers

What does statics study?

Equilibrium of bodies, at rest or moving with constant velocity. Signup and view all the answers

What does dynamics study?

Accelerated motion of bodies. Signup and view all the answers

Why is statics a special case of dynamics?

Its acceleration is 0. Signup and view all the answers

What is length in mechanics?

It locates the position of a point in space and describes size. Signup and view all the answers

What does time represent in mechanics?

A succession of events. Signup and view all the answers

What is mass?

A quantity of matter compared to the action of one body to another. Signup and view all the answers

What is force?

A push or pull exerted by a body onto another. Signup and view all the answers

What are idealizations in mechanics?

Simplify application of a theory. Signup and view all the answers

What is a particle in mechanics?

A mass, but a size that can be neglected. Signup and view all the answers

What is a rigid body?

Combination of a large number of particles in which all particles remain at a fixed distance from one another. Signup and view all the answers

A rigid body’s shape changes depending on the type of material.

False Signup and view all the answers

What is a concentrated force?

Assumed to act at a point on a body. Signup and view all the answers

How can we represent a load in mechanics?

By a concentrated force. Signup and view all the answers

What does Newton's First Law of Motion state?

An object in motion stays in motion, unless acted upon by an outside force. Signup and view all the answers

What is Newton's Second Law of Motion?

F=ma. Signup and view all the answers

What is Newton's Third Law of Motion?

Equal and opposite reaction. Signup and view all the answers

What is F in relation to Newton's Law of Gravitational Attraction?

Force of gravitation between two particles. Signup and view all the answers

What does G represent?

Gravitational constant. Signup and view all the answers

What does m1, m2 or Me refer to?

Mass of particles. Signup and view all the answers

What does r or d represent?

Distance between two particles or center of Earth. Signup and view all the answers

What is weight in mechanics?

The only gravitational force considered in our study of mechanics. Signup and view all the answers

What is the SI unit for length?

m Signup and view all the answers

What is the SI unit for time?

s Signup and view all the answers

What is the SI unit for mass?

kg Signup and view all the answers

What is the SI unit for force?

Newton (N) Signup and view all the answers

What is the FPS unit for slug?

(lb*s^2)/ft Signup and view all the answers

How much is 1 lb in Newtons?

4.448 N Signup and view all the answers

How much is 1 slug in kilograms?

14.59 kg Signup and view all the answers

How much is 1 ft in meters?

0.3048 m Signup and view all the answers

What is 10^9 in metric prefixes?

Giga, G Signup and view all the answers

What is 10^6 in metric prefixes?

Mega, M Signup and view all the answers

What is 10^3 in metric prefixes?

Kilo, k Signup and view all the answers

What is 10^-3 in metric prefixes?

Milli, m Signup and view all the answers

What is 10^-6 in metric prefixes?

Micro, (mu) Signup and view all the answers

What is 10^-9 in metric prefixes?

Nano, n Signup and view all the answers

What type of unit is a Newton?

Derived unit. Signup and view all the answers

What are meter, second, and kilogram in measurement?

Base units. Signup and view all the answers

Study Notes

Mechanics Overview

Mechanics is the study of bodies at rest or in uniform motion.
Divided into three main branches: statics, dynamics, and kinematics.

Rigid-Body Mechanics

Rigid-body mechanics is a subset of mechanics with two branches: statics and dynamics.
Rigid bodies do not deform under load and maintain their shape.

Statics and Dynamics

Statics focuses on the equilibrium of bodies at rest or moving with constant velocity.
Dynamics pertains to the accelerated motion of bodies.
Statics is a specific case of dynamics where acceleration is zero.

Fundamental Concepts

Length determines the position of a point in space and describes its size.
Time is defined as a succession of events.
Mass is a measure of the quantity of matter and influences the action between bodies.

Forces in Mechanics

Force is a push or pull exerted by one body onto another.
Concentrated forces act at a single point on a body.
Loads can be represented by concentrated forces.

Newton’s Laws of Motion

Newton's First Law: An object in motion remains in motion unless acted upon by an external force.
Newton's Second Law: Force (F) equals mass (m) times acceleration (a), represented by the equation F=ma.
Newton's Third Law: For every action, there is an equal and opposite reaction.

Gravitational Concepts

The force of gravitation between two particles is denoted as F.
Masses of particles are designated as m1, m2, or Me.
The distance between two particles or from the Earth's center is represented as r or d.

Weight

Weight is the gravitational force acting on a mass and is the primary gravitational force studied in mechanics.

SI Units

Length is measured in meters (m).
Time is measured in seconds (s).
Mass is measured in kilograms (kg).
The SI unit for force is Newton (N).

Conversion Factors

1 lb is equivalent to 4.448 N.
1 slug is equivalent to 14.59 kg.
1 ft equals 0.3048 m.

Metric Prefixes

Giga (G) represents 10^9.
Mega (M) represents 10^6.
Kilo (k) represents 10^3.
Milli (m) represents 10^-3.
Micro (µ) represents 10^-6.
Nano (n) represents 10^-9.

Classification of Units

Newton is a derived unit of force.
Meter, second, and kilogram are base units in the SI system.

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Description

Discover the fundamental concepts of mechanics with these flashcards from Statics Chapter 1. This quiz covers definitions, branches of mechanics, and the characteristics of rigid bodies. Test your understanding and solidify your knowledge in statics.