Why does a mechanic apply grease between the moving parts of a bicycle or a motor?

Correct option is C

The correct answer is (c) As a lubricant to reduce friction.
· A mechanic applies grease between the moving parts of a bicycle or motor to act as a lubricant, which helps to reduce friction between the parts.
· By reducing friction, grease ensures smoother movement of the parts, preventing wear and tear and improving the efficiency of the machine.
· It also helps in prolonging the life of the components by minimizing damage caused by excessive friction.
Information Booster:
How Grease Works:
· Grease forms a thin layer between moving surfaces, allowing them to slide past each other more easily, thus reducing friction and heat.
· It also protects the parts from corrosion and rust.
Importance of Lubrication:
· Lubrication reduces energy losses in the form of heat.
· It decreases maintenance costs and extends the operational life of machines.