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?
3
How many branches can rigid-body mechanics be divided into?
2
What does rigid-body mechanics deal with?
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A rigid body deforms under load.
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What does statics study?
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What does dynamics study?
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Why is statics a special case of dynamics?
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What is length in mechanics?
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What does time represent in mechanics?
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What is mass?
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What is force?
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What are idealizations in mechanics?
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What is a particle in mechanics?
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What is a rigid body?
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A rigid body’s shape changes depending on the type of material.
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What is a concentrated force?
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How can we represent a load in mechanics?
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What does Newton's First Law of Motion state?
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What is Newton's Second Law of Motion?
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What is Newton's Third Law of Motion?
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What is F in relation to Newton's Law of Gravitational Attraction?
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What does G represent?
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What does m1, m2 or Me refer to?
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What does r or d represent?
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What is weight in mechanics?
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What is the SI unit for length?
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What is the SI unit for time?
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What is the SI unit for mass?
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What is the SI unit for force?
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What is the FPS unit for slug?
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How much is 1 lb in Newtons?
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How much is 1 slug in kilograms?
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How much is 1 ft in meters?
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What is 10^9 in metric prefixes?
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What is 10^6 in metric prefixes?
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What is 10^3 in metric prefixes?
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What is 10^-3 in metric prefixes?
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What is 10^-6 in metric prefixes?
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What is 10^-9 in metric prefixes?
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What type of unit is a Newton?
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What are meter, second, and kilogram in measurement?
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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.