Free-body diagrams show objects and forces acting on them. Net force equals zero when object is in equilibrium. Forces can be represented as vectors in free-body diagrams
Inclined plane is a flat surface tilted at an angle with one end higher. It's one of six simple machines used for lifting or lowering loads. Objects accelerate due to unbalanced forces on inclined plane
Normal force is the force exerted by a surface on a stationary body. It acts perpendicular to the surface and is felt daily. When a body is at rest, the net force equals zero
FBD shows all forces acting on an object without external environment. Allows analyzing objects in isolation without distractions
Objects slide down inclined planes due to unbalanced forces. Two main forces act: gravity and normal force. Normal force acts perpendicular to surface, not upward
Questions must be submitted by February 9, 2015. Students should do their own work and provide answers. No internet or external sources should be used