1. The forces and their equilibrium
1.1. English
1.1.1. Force,F, is all action able to modify the state of repose or the movement of the bodies or produce in ther some deformation. Their unit in the SI is the newton, N
1.1.2. Elements of a force
1.1.2.1. Module
1.1.2.2. Direction
1.1.2.3. Sense
1.1.2.4. Point of aplication
1.2. Composition of forces
1.2.1. Resulting force, Fneta
1.2.1.1. Si Fneta=0
1.2.1.1.1. Body in equilibrium
2. Memorization
2.1. Spanish
2.1.1. New vocabulary
3. Effects of the forces
3.1. Maths
3.1.1. Text book, exercises 34, 35, 36, 37
3.2. Deformation
3.2.1. Hooke's Law F=K.· aL=k·(l-l0)
3.2.1.1. Is the fundament of
3.2.1.1.1. Dinamometer:instrument for measure the intensity of forces
3.3. Alteration of the state the movement
3.3.1. Dynamic
3.3.1.1. The laws of Newton
3.3.1.1.1. First law of Newton:Law of the inertiia
3.3.1.1.2. Second law of Newton:Fundamental law of dynamicF=m·a
3.3.1.1.3. Third law of Newton:Law of action and reaction
3.4. Simples machines and their funcionament
3.5. The lever
3.5.1. Law of the lever: F·d=R·r
3.5.2. Classes
3.5.2.1. First grade
3.5.2.2. Second grade
3.5.2.3. Third grade
3.6. The inclined plane
3.7. The pulley
3.7.1. Fixed
3.7.2. Mobile
3.7.3. Polipasto