Question

Select the correct answer.
Based on the law of conservation of energy, how can we reasonably improve a machine’s ability to do work?

A.
Move the machine to a different gravitational field.
B.
Increase the friction between its moving parts.
C.
Reduce the friction between its moving parts.
D.
Redefine the machine’s system boundaries.

Answer 1

c.....or b.....

hope it helps

Answer 2

Answer:

c

Explanation:

by reducing the friction between its moving parts