Work, Energy And Power

Work – energy theorem

• Work done by net force is equal to the change in kinetic energy of the body
• (Dot product, hence it is a scalar quantity)
• No work is done if

  • displacement is zero

  • force is zero

  • force and displacement are mutually perpendicular i.e.,

• Kinetic energy, 

• Work done by variable force

• Work done is the area subtended by the …