What energy is used in a rube goldberg machine?

A Rube Goldberg machine primarily utilizes mechanical energy to perform tasks through a complex series of chain reactions. This can include gravitational potential energy when objects are raised, kinetic energy when they move, and elastic potential energy in springs or rubber bands. Additionally, other forms of energy like thermal energy may be involved, depending on the materials and mechanisms used in the machine. Overall, the energy in a Rube Goldberg machine is transformed and transferred through various stages to achieve a simple task in a convoluted manner.