Chapter 4 Work and Energy
The mathematical expression for the principle of work and energy is
where
T is called the kinetic energy, U is the work done by the force F
Work of a Weight
where W=mg is the weight, Dy is the vertical displacement
Work of a Spring Force
where k is the spring stiffness, s is the displacement of the spring from its equilibrium position.
Potential Energy
Read textbook to understand the definition of the conservative force and the potential energy.
Gravitational Potential Energy
where W is the weight and y is the vertical distance measured from a reference position.
Elastic Potential Energy
where k is the spring constant and s is the distance measured from its unstretched position.
Conservation of Energy
