Question

When the machine parts of an object rotate
a) When the rotating parts of machines are in contacts, what may happens?
b) Does this heat cause fuel loss?
c) In this case, friction is beneficial or non- beneficial.
d) Write three methods to reduce friction.​

Answer 1

Answer:

a) It may cause wear and tear between the surfaces due to frictional force.

b) Yes because most of the energy got wasted in form of heat and sometimes light due to friction produced, and it can't be got back.

c) Non beneficial , as their is a loss of energy

d) Greasing/lubricating oil, Air cushions, and ball bearings

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