A free, self-paced textbook in 7 chapters. Read a chapter, then drill it with the 100 companion flashcards using spaced repetition.
Statics is the branch of mechanics that analyzes bodies at rest or in equilibrium. The first condition of equilibrium states that the sum of all external forces acting on a body mu...
Dynamics extends statics by considering bodies in motion and the forces that cause that motion. The foundation is built on Newton's three laws of motion. The first law states that...
Thermodynamics governs the relationships among heat, work, temperature, and energy. The Zeroth Law establishes the concept of temperature by stating that if two systems are each in...
Fluid mechanics is concerned with the behavior of liquids and gases. Density \(\rho = m/V\), measured in kg/m³, is the most fundamental property. Pascal's law states that pressure...
Mechanics of materials studies how solids deform and fail under load. Stress is force per unit area, \(\sigma = F/A\), measured in Pascals (Pa). Strain is the ratio of deformation...
Heat transfer is the movement of thermal energy driven by temperature differences. There are three modes of heat transfer. Conduction transfers heat through a solid by molecular an...
Machine design involves selecting and sizing components to transmit motion and force safely. A keyway is a slot machined into a shaft and hub to receive a key that transmits torque...