select the correct answer. based on the law of conservation of energy, how can we reasonably improve a…

select the correct answer. based on the law of conservation of energy, how can we reasonably improve a machines ability to do work?\na. move the machine to a different gravitational field.\nb. increase the friction between its moving parts.\nc. reduce the friction between its moving parts.\nd. redefine the machines system boundaries.

select the correct answer. based on the law of conservation of energy, how can we reasonably improve a machines ability to do work?\na. move the machine to a different gravitational field.\nb. increase the friction between its moving parts.\nc. reduce the friction between its moving parts.\nd. redefine the machines system boundaries.

Answer

Brief Explanations:

Friction is a non - conservative force that dissipates energy as heat. Reducing friction between a machine's moving parts means less energy is wasted, and more of the input energy can be used for useful work, in line with the law of conservation of energy. Moving to a different gravitational field doesn't directly improve work - doing ability in a general sense related to energy conservation for most machines. Increasing friction wastes more energy. Redefining system boundaries doesn't improve the machine's work - doing ability based on energy conservation principles.

Answer:

C. Reduce the friction between its moving parts.