force

• A force is a push or pull that can cause an object to:

  • Change its speed
  • Change its direction
  • Change its shape
• • Forces are interactions between objects that can make objects move, stop moving, or change the way they are moving.
• • Forces can be contact forces, where objects touch, or non-contact forces, where objects don't need to be in direct contact.
• Types of Force

  Contact & Non-Contact Forces
• Contact Forces

  • These are forces that require direct physical contact between objects.
• Non-Contact Forces

  • These are forces that can act on objects without them being in direct physical contact.
• • Muscular force is the force exerted by the muscles when they contract or shorten.
• Muscular Force - It is the force that allows us to move our body parts and interact with the external environment.
• • Gravity - the force that attracts objects with mass towards each other.
• • Gravitational force is responsible for bringing the items we toss into the air back to earth.When an object is resting on a surface it is exerting a downward force equal to its weight, and this downward force is known as Gravitational force.
• Electrostatic Force- The electrostatic force is very similar to the gravitational force. The difference here is that gravitational force acts between masses and an electrostatic force acts between two charged bodies.
• Direction

  • Forces have a specific direction in which they act, either pushing or pulling an object. The direction of a force can change the object's motion.
• Magnitude

  • The magnitude of a force refers to its strength or size.
• Magnitude -

  • The greater the magnitude of a force, the greater its effect on an object.
• Objects Involved

  • Forces always involve at least two objects - the object exerting the force and the object experiencing the force.
• • Objects Involved
  • The properties of these objects, such as their mass, surface area, and texture, can affect the force.
• Friction - the force that opposes the motion between two surfaces in contact.
• Tension - the force transmitted through a string, rope, or cable when it is pulled tight
• Normal force - the force exerted perpendicular to the surface when one object pushes against another.