Mechanical equivalent of heat (Joule’s law)

• Voltage indicator
• Current indicator
• Temperature indicator
• Speed controller
• Water drain.
• Double walled calorimeter vacuum with tightly lid made from plastic.


• This experiment used to study the physical meaning of the mechanical equivalent of heat, and used to determine it experimentally. In addition, we study the transformation of energy by changing electric energy into kinetic energy and into heat energy again.