All Flashcards
What are the steps to create a free-body diagram?
- Represent the object as a dot. 2. Draw vectors representing all forces acting on the object, starting from the dot. 3. Label each force vector with its magnitude and direction.
How do you choose an appropriate coordinate system for a free-body diagram?
- Identify the direction of acceleration. 2. Align one axis of the coordinate system with the direction of acceleration.
What is a vector quantity?
A quantity with both magnitude and direction.
Define contact force.
A force resulting from the interaction of objects touching each other.
What is a free-body diagram?
A visual representation of all forces acting on a single object or system.
Define gravitational force (weight).
The force exerted on an object due to gravity.
What is normal force?
The force exerted by a surface on an object resting on it, perpendicular to the surface.
Define tension.
The force exerted by a rope or string when it is pulled tight.
What is the difference between static and kinetic friction?
Static friction: Opposes the start of motion. Kinetic friction: Opposes motion between surfaces already in relative motion.
Differentiate between weight and normal force.
Weight: Force due to gravity acting on an object. Normal Force: Force exerted by a surface perpendicular to the contact area, counteracting the component of the weight perpendicular to the surface.