Mechanical energy is defined as what?

Mechanical energy is defined as what?

• A. Kinetic energy
• B. Potential energy
• C. Gravitational potential energy
• D. Mechanical energy

Answer: (D)

Mechanical energy describes the total energy an object or system has from both motion and position. It combines kinetic energy, the energy of motion, and potential energy, the energy stored because of height or configuration. Gravitational potential energy is a type of potential energy, but it’s only part of the total. When you add kinetic energy to potential energy, you get the mechanical energy. In systems with only conservative forces, that total stays constant, so energy simply shifts between motion and height. For example, a roller coaster car at the top has high potential energy and low kinetic energy, and as it speeds down, potential energy becomes kinetic energy, with their sum staying the same.

Mechanical energy describes the total energy an object or system has from both motion and position. It combines kinetic energy, the energy of motion, and potential energy, the energy stored because of height or configuration. Gravitational potential energy is a type of potential energy, but it’s only part of the total. When you add kinetic energy to potential energy, you get the mechanical energy. In systems with only conservative forces, that total stays constant, so energy simply shifts between motion and height. For example, a roller coaster car at the top has high potential energy and low kinetic energy, and as it speeds down, potential energy becomes kinetic energy, with their sum staying the same.