Energy conservation

Need to know

What you need to know

• 5.1 Energy conservation.
• In physics, work (W) is the energy transferred to or from an object through the application of force (F) along a displacement (d) 𝑊 = 𝐹 × 𝑑.
• The SI units for work is in Joules.
• The principle of conservation of energy states that energy is neither created nor destroyed. But may transform from one type to another .
• E.g. work can be transformed to heat (friction!), electric to light.
• Not all energy transferred is useful. E.g. when transferring electric to light, some energy is wasted in the form of heat!.

Explanation

Energy conservation

1. 5.1 Energy conservation.
2. In physics, work (W) is the energy transferred to or from an object through the application of force (F) along a displacement (d) 𝑊 = 𝐹 × 𝑑.
3. The SI units for work is in Joules.
4. The principle of conservation of energy states that energy is neither created nor destroyed. But may transform from one type to another .