Applications of Friction
Trending Questions
Q.
How can we increase the efficiency of a pulley system?
Q.
If you try to hold a glass with oil on your hands, it tends to slip. Why?
Q.
Applying oil on door hinges
Q. Name the type of force which acts in the following case:
- A bicycle comes to rest slowly when the cyclist stops pedalling.
Q. The efficiency of a machine _____ because friction opposes its motion.
- decreases
- increases
- remains unaffected
Q. In which of the following cases is friction a disadvantage to us ?
- Running
- Baking
- Parts of a machine rubbing against
- Writing with a pencil
Q.
List three disadvantages of friction
Q. Which of the following statements is NOT true for friction force?
- Friction produces more wear and tear
- A lighter object will experience a smaller frictional force
- Friction is harmful
- Friction force is produced when two objects rub against each other
