Le forze, la forza peso, la forza elastica, la forza d'attrito, l'equilibrio dei solidi, il momento della forza, le leve.
Semplice presentazione usata in una scuola professionale.
Le forze, la forza peso, la forza elastica, la forza d'attrito, l'equilibrio dei solidi, il momento della forza, le leve.
Semplice presentazione usata in una scuola professionale.
1. Newton's universal law of gravitation states that every mass attracts every other mass, with an attraction proportional to the product of their masses and inversely proportional to the square of the distance between them.
2. Newton showed that Kepler's laws of planetary motion, including elliptical orbits, could be explained and extended by his laws of motion and universal law of gravitation.
3. Newton's version of Kepler's third law relates the orbital period and average orbital distance of orbiting bodies to determine the total mass of the system.
This document discusses friction and circular motion. It defines friction as a force that opposes motion between two surfaces in contact. Static friction is greater than kinetic friction, requiring more force to get an object moving than to keep it moving. Centripetal force is needed to cause centripetal acceleration towards the center for circular motion. This force can come from tension in a string, friction between surfaces, or the slant of a banked turn providing a force component towards the center. Centrifugal force is not a real force but rather the apparent outward force felt in a turning frame of reference.
Centripetal force is a force directed towards the center of curvature of an object's curved path. Centripetal acceleration is proportional to the square of an object's speed and inversely proportional to the radius of its path. Newton's law of universal gravitation states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
This document provides a presentation package on the topic of conservation of momentum for physics students. It includes:
1) An introduction defining momentum and the three types of collisions - elastic, inelastic, and partially elastic.
2) An explanation of the law of conservation of momentum, which states that the total momentum before and after a collision remains the same if no external forces act.
3) An example problem demonstrating how to use the law of conservation of momentum to calculate unknown velocities after a collision.
4) Additional examples and exercises for students to practice applying the law, along with a demonstration of why a gun recoils backwards after firing due to conservation of momentum.
1. Circular motion involves an object moving in a circular path at a constant speed. While the speed is constant, the velocity is always changing since it is changing direction.
2. For an object in circular motion, there is an acceleration even when the speed is constant called centripetal acceleration which is directed towards the center of the circle. This acceleration requires a net force towards the center known as the centripetal force.
3. Common examples of centripetal force include gravity keeping planets in orbit, tension in a string keeping a rock whirling above one's head, and friction between tires and the road allowing cars to turn. The magnitude of centripetal acceleration depends on speed, radius of the
This lecture outline covers topics in linear motion including:
- Motion is relative to a reference point
- Concepts of speed, velocity, and acceleration are defined
- Free fall acceleration on Earth is approximately 10 m/s2
- Equations are provided to calculate speed, velocity, acceleration, distance, and time for objects experiencing linear motion and free fall
- Velocity vectors can be used to determine resultant motion when two velocities are acting at once
1. Newton's universal law of gravitation states that every mass attracts every other mass, with an attraction proportional to the product of their masses and inversely proportional to the square of the distance between them.
2. Newton showed that Kepler's laws of planetary motion, including elliptical orbits, could be explained and extended by his laws of motion and universal law of gravitation.
3. Newton's version of Kepler's third law relates the orbital period and average orbital distance of orbiting bodies to determine the total mass of the system.
This document discusses friction and circular motion. It defines friction as a force that opposes motion between two surfaces in contact. Static friction is greater than kinetic friction, requiring more force to get an object moving than to keep it moving. Centripetal force is needed to cause centripetal acceleration towards the center for circular motion. This force can come from tension in a string, friction between surfaces, or the slant of a banked turn providing a force component towards the center. Centrifugal force is not a real force but rather the apparent outward force felt in a turning frame of reference.
Centripetal force is a force directed towards the center of curvature of an object's curved path. Centripetal acceleration is proportional to the square of an object's speed and inversely proportional to the radius of its path. Newton's law of universal gravitation states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
This document provides a presentation package on the topic of conservation of momentum for physics students. It includes:
1) An introduction defining momentum and the three types of collisions - elastic, inelastic, and partially elastic.
2) An explanation of the law of conservation of momentum, which states that the total momentum before and after a collision remains the same if no external forces act.
3) An example problem demonstrating how to use the law of conservation of momentum to calculate unknown velocities after a collision.
4) Additional examples and exercises for students to practice applying the law, along with a demonstration of why a gun recoils backwards after firing due to conservation of momentum.
1. Circular motion involves an object moving in a circular path at a constant speed. While the speed is constant, the velocity is always changing since it is changing direction.
2. For an object in circular motion, there is an acceleration even when the speed is constant called centripetal acceleration which is directed towards the center of the circle. This acceleration requires a net force towards the center known as the centripetal force.
3. Common examples of centripetal force include gravity keeping planets in orbit, tension in a string keeping a rock whirling above one's head, and friction between tires and the road allowing cars to turn. The magnitude of centripetal acceleration depends on speed, radius of the
This lecture outline covers topics in linear motion including:
- Motion is relative to a reference point
- Concepts of speed, velocity, and acceleration are defined
- Free fall acceleration on Earth is approximately 10 m/s2
- Equations are provided to calculate speed, velocity, acceleration, distance, and time for objects experiencing linear motion and free fall
- Velocity vectors can be used to determine resultant motion when two velocities are acting at once
This document provides information on the educational offerings of the Scuola Primaria "Don Lorenzo Milani" school in San Pietro. It discusses the school's welcoming environment for students, encouragement of relationships and critical thinking. It also outlines the school's focus on holistic student development, social skills, and academic strengthening. Details are provided on classroom spaces, equipment, services offered, and collaboration with families.
5. La legge fondamentale della
dinamica
La dinamica è la parte della fisica che studia le
relazioni tra i movimenti e le forze che li
provocano.
F= m x a
6. La legge della gravitazione
universale
Fg =G x m x M : R2
8. La massa e il peso
La massa di un oggetto non cambia mai il suo
peso invece dipende dal luogo in cui si trova
P=m x g
9. lL'azione di ogni forza è sempre accompagnata da
una reazione uguale e contraria.
10. La forza centrifuga e la forza
centripeta
La forza centrifuga appare soltanto nei sistemi di
riferimento che si muovono lungo una traiettoria
curva.