In what ways can machines change the way work is done?

1 Answer
Jul 13, 2016

Machines transfer energy from one 'energy term' to another


For example, a torch transfers energy from chemical potential (in the battery) to thermal and light. All machines transfer energy from input to output, and do work in the process. Of course, no machine is 100% efficient, so energy will of course be dissipated, usually as heat.