Question

Mention the advantage of using grease in the axle of a bicycle.

Answer 1

Advantages of using grease in the axle of a bicycle are:

1. The force of friction opposes relative motion between two surfaces in contact.
2. The grease reduces friction and helps to reduce wear and tear of various parts of the axle in contact.
3. The grease as a lubricant also reduces exposure of metal to water and reduces rusting of metal.
4. Lubricants like wax or oil are water-resistant.
5. The role of grease is to reduce friction, wear and tear and prevent rusting also.