Answer:
- Work is done when force produces displacement.
- SI unit: Joule (J).
Concept
- W = F × s × cosθ
Interrelationship
- Force causes displacement and performs work.
- Work is transfer of energy
Energy is the capacity to do work.
- W = ΔKE
- PE = mgh
- KE = ½mv²
Applications
- Engines, hydroelectric plants, transportation, sports science
Work, force and energy are fundamental and interrelated concepts in mechanics.