# FORCES AND THEIR EFFECTS

### Description

Fuerzas y sus efectos. Peso y masa. Energía Mecánica. Principio de Arquímedes y Leyes de Newton
Mind Map by Escolapios Albacete, updated more than 1 year ago
 Created by Escolapios Albacete about 8 years ago
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## Resource summary

FORCES AND THEIR EFFECTS
1. Definition

Annotations:

• A vector quantity that tends to produce an acceleration of a body in the direction of its application or a change of the direction that  the object is moving or a deformation of a body
1. Representation
1. Vectors

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• Vectors are usually drawn as arrows.
2. Types

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• Contact and Non-Contact forces Instantaneous and Constant forces
1. WEIGHT

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• The weight of an object is the force of attraction that gravity exerts on it. Depends on: mass and gravity w = m x g
1. WEIGHT AND MASS

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• MASS is an invariable quantity that depends on the amount of matter. Mass is measured with a balance. WEIGHT depends on gravity. So, it changes with it. Weight is measured with a dynamometer.
1. Units

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• SI: Newton 9.8 newtons = 1 kilopond
1. WEIGHT AND DENSITY

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• d = m/v w = V x d x g
2. UPTHRUST

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• Depends on: - Volume - Density upthrust = V x d x g
1. ARCHYMEDES' PRINCIPLE Law of buoyancy

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• Archimedes' principle indicates that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces.
1. Applications

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• Boats and submarine
2. FORCES & MOTION
1. NEWTON'S LAWS
1. First Law

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• An object in motion on which no forces act has uniform rectilinear motion.
1. Second Law

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• A constant force exerted on an object gives it a constan acceleration that is directly proportional to the force and inversely proportional to the object's mass.
1. Third Law

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• When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
2. FORCES & EQUILIBRIUM

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• An object is in equilibrium when the resultant of all the forces that act on it is nil.
1. FORCE & WORK

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• Work is done when an object is displaced because a force acts on it, either partialy or completely in the same direction as the motion. W = F x d
1. Unit of work

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• Joule:  is the work done by an object that, subjected to a force of 1 N, is displaced 1 m in the same direction as the force.
2. ENERGY & WORK
1. MECHANICAL ENERGY

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• Objects have mechanical energy when they move at a certain speed or are displaced with respect to their position of equilibrium, or are at a certain height above the ground.
1. KINETIC ENERGY

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• EK is the energy that an object in motion has. it is depend on the mass of the object and how fast it moves (its speed)
1. POTENTIAL ENERGY

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• An object stores potential energy when it moves in the opposite direction to a force acting on it.
1. Elastic potential Energy
1. Gratitational Potential Energy
2. SIMPLE MACHINES
1. The Lever
1. Types of levers
2. Static or fixed pulley

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