What are the differences between static and kinetic friction?
Static Friction: Acts on objects at rest, prevents motion. Kinetic Friction: Acts on objects in motion, opposes motion.
How does the direction of tension compare to the direction of the normal force?
Tension: Acts along the direction of the rope/string/wire. Normal Force: Acts perpendicular to the surface.
What is the difference between the equation for static friction and kinetic friction?
Static Friction: $F_{fs} le mu_s F_n$. Kinetic Friction: $F_{fk} = mu_k F_n$.
What happens when a spring is compressed or stretched?
The spring exerts a force that opposes the compression or extension.
What is the effect of increasing the angle of an inclined plane on the normal force acting on an object?
Increasing the angle decreases the normal force, as $F_n = F_g cos( heta)$.
What happens when an object is placed on an inclined plane?
The object experiences a component of its weight acting parallel to the plane, potentially causing it to slide down.
What is the effect of increasing the coefficient of friction between two surfaces?
It increases the frictional force between the surfaces, opposing motion or attempted motion.
What happens if the applied force is less than the maximum static friction?
The object remains at rest, and the static friction force equals the applied force.
What is the definition of contact forces?
Forces that arise when two objects are in physical contact.
What is the definition of tension?
Force transmitted through a rope, string, or wire when pulled taut.
What is the definition of normal force?
Force exerted by a surface on an object resting on it.
What is the definition of friction?
Force that opposes the motion or attempted motion of an object.
What is the definition of spring force?
Force exerted by a spring when it's compressed or stretched.
