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.
What are the steps to create a free-body diagram?
1. 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?
1. Identify the direction of acceleration. 2. Align one axis of the coordinate system with the direction of acceleration.
What is the effect of increasing the angle of an inclined plane on the component of gravitational force parallel to the plane?
The component of gravitational force parallel to the plane increases.
What is the effect of friction on the motion of an object?
Friction opposes the motion of the object, causing it to slow down or preventing it from starting to move.
What is the effect of a non-zero net force on an object?
The object accelerates in the direction of the net force, according to Newton's Second Law ($\vec{F} = m\vec{a}$).
What is the effect of an object resting on a surface?
The surface exerts a normal force on the object, perpendicular to the surface.
What happens when the tension in a rope pulling an object increases?
The object experiences a greater force in the direction of the tension, potentially increasing its acceleration.
