Mechanics

• Mechanics studies the motion of objects and the forces that cause motion, including both translational motion and rotational motion.
• A force is any push or pull that can change an object's motion, measured in Newtons.
• When forces are balanced, an object remains at rest, meaning it has zero net acceleration.
• When a force acts on an object through a distance, work is done, transferring energy to or from the object.
• The capacity to do work is called energy, which exists in various forms including kinetic and potential.
• Newton's third law states that for every action, there is an equal and opposite reaction force.
• Friction is a contact force that opposes the relative motion between surfaces in contact.
• The center of mass is the point where all the mass of an object can be considered to be concentrated.
• Forces can be analyzed using vector analysis, which accounts for both magnitude and direction.
• Rotational motion involves torques, which are forces applied at a distance from the axis of rotation.
• Simple machines provide mechanical advantage by allowing a smaller input force to produce a larger output force.
• Conservative forces do work that depends only on the starting and ending positions, not the path taken.
• Moving objects possess kinetic energy, which depends on their mass and velocity.
• Objects can store potential energy due to their position in a force field, such as gravitational or elastic potential energy.
• The conservation of energy principle states that energy cannot be created or destroyed, only transformed from one form to another.
• The rate at which work is done or energy is transferred is called power, measured in watts.