Podcast Beta
Questions and Answers
What is represented by arrows in force diagrams?
A free body diagram shows the object as a block and labels the forces acting on it.
False
What is the definition of net force?
The single force that will have the same effect as all the original forces acting on an object.
When the effects of each force are cancelled out by another, the forces are called __________ forces.
Signup and view all the answers
Match the following types of forces to their descriptions:
Signup and view all the answers
Which diagram shows all the forces acting on a specific object and represents it as a dot?
Signup and view all the answers
Net force is zero when forces acting on an object are unbalanced.
Signup and view all the answers
What must be included with the arrows in a force diagram?
Signup and view all the answers
What occurs when forces acting on an object are balanced?
Signup and view all the answers
Static equilibrium occurs when an object is in motion and not experiencing any net force.
Signup and view all the answers
Name a type of force that occurs when two surfaces slide across each other.
Signup and view all the answers
In dynamic equilibrium, an object's speed and direction remain the same when the net force is ______.
Signup and view all the answers
Which of the following forces is NOT considered a contact force?
Signup and view all the answers
Match the following types of equilibrium with their characteristics:
Signup and view all the answers
An applied force is always greater than the frictional force in order for an object to move.
Signup and view all the answers
What is a free body diagram used for?
Signup and view all the answers
What do magnetic field lines indicate?
Signup and view all the answers
Magnetic field lines can cross each other.
Signup and view all the answers
What is the relationship between gravitational force and distance?
Signup and view all the answers
The symbol for gravitational force is ______.
Signup and view all the answers
Match the following terms with their definitions:
Signup and view all the answers
What causes a magnet to attract a non-magnetized ferromagnetic material?
Signup and view all the answers
What are the two poles of a magnet called?
Signup and view all the answers
The strength of a magnetic field is indicated by the closeness of the field lines.
Signup and view all the answers
Study Notes
Forces and Motion
- Force is an interaction that can cause an object to accelerate.
- Air resistance is a type of force that acts on objects moving through the air.
- Electric Field is a region surrounding a charged object where other charged objects would experience a force.
- Force Diagrams represent the forces acting on an object, showing the object and all the forces acting on it.
- Free Body Diagrams show the object as a dot and all the forces acting on it, represented by arrows.
- Forces are represented as arrows, with length indicating the size of the force.
- The arrow direction shows the direction of the force.
- Force arrows start at the point the force is applied and point away from the dot.
- Forces should be clearly labelled.
Resultant or Net Force
- The net force is the single force that has the same effect as all original forces acting on an object.
- When net force is zero the object is in equilibrium, meaning its motion does not change.
- Balanced Forces cancel each other out, resulting in no change in the object's motion.
- Unbalanced Forces cause a change in the object's motion, leading to acceleration.
Equilibrium
- Static Equilibrium occurs when an object is at rest.
- Dynamic Equilibrium occurs when an object continues to move at aconstant velocity.
Magnetism
- Magnetic Field Lines show the strength and direction of a magnetic field.
- Magnetic Field Lines go from the North pole to the South pole of a magnet, and never cross.
- Strong magnetic fields are represented by closer field lines.
- Magnets have two poles: North and South.
- Magnetic Field Diagrams depict the shape and strength of a magnetic field around a magnet.
- Cobalt is a ferromagnetic material.
- Magnets attract non-magnetized ferromagnetic materials, because the magnet's field induces temporary alignment of magnetic domains, creating a temporary North and South pole in the other material.
Gravitational Force
- Gravitational Force is the attractive, non-contact force between any two objects with mass.
- Gravitational Force Increases with the mass of the objects.
- Gravitational Force Decreases as the distance between the objects increases.
- Mass is the amount of matter in an object, measured in kilograms (kg).
- Weight is the force exerted on an object by a large celestial body (like earth) on or near its surface, measured in Newtons (N).
- **Gravitational Acceleration ** is the acceleration due to gravity, approximately 9.8 m/s².
Contact Forces
- Contact Forces occur when objects are physically touching.
- Normal Force is the support force exerted by a surface perpendicular to the object resting on it.
- Frictional Force occurs when two surfaces slide or try to slide against each other.
- Applied Force is a force applied to an object by a person or another object.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the concepts of forces and motion with this quiz. Test your understanding of various forces, free body diagrams, and how net force affects object motion. Perfect for students learning physics basics.