Respuesta :

venkatapotukuchi88

Answer:

Explanation:

The moving part won't move on its own there's a force but the force isn't enough for something like a bike chain it need grease to move smoothly or else it will just be super stuck or slow.

mimeeshakya123

Answer:

because grease produce more fiction which helps moving part of machine not get jamm while working

Otras preguntas