Understanding Energy: Types, Efficiency, and Calculations

Energy

The capacity to do work or produce change.

Types of Energy

Ten distinct forms including kinetic and potential.

Energy Efficiency

Ratio of useful energy output to input.

Friction

Resistance causing energy loss in systems.

Air Resistance

Force opposing motion through air, causing energy waste.

Law of Conservation of Energy

Energy cannot be created or destroyed, only transformed.

Dissipate

To disperse energy, often as heat.

Work

Energy transferred when a force moves an object.

Power

Rate of doing work, measured in watts.

Calculating Work

Work = Force × Distance × cos(θ).

Calculating Power

Power = Work done / Time taken.

Input and Output of Energy

Energy entering and leaving a system, including waste.

Mechanical Energy

Sum of potential and kinetic energy in an object.

Potential Energy

Stored energy based on position or configuration.

Kinetic Energy

Energy of an object due to its motion.

spring constant

Measure of the stiffness of a spring

hookes law

the amount an object stretches(or compresses) is directly proportional to the amount of force put on the object

deformation

Change in shape or size of an object