Podcast
Questions and Answers
What type of friction is illustrated by rubbing pieces of wood together to start a fire?
What type of friction is illustrated by rubbing pieces of wood together to start a fire?
- Lubricated friction
- Dry friction (correct)
- Skin friction
- Fluid friction
Which type of friction can lead to wear and performance degradation?
Which type of friction can lead to wear and performance degradation?
- Skin friction
- Fluid friction
- Internal friction (correct)
- Lubricated friction
What happens to kinetic energy when motion with friction occurs?
What happens to kinetic energy when motion with friction occurs?
- It is transformed to thermal energy (correct)
- It is conserved
- It is eliminated
- It is transformed to potential energy
What type of force is friction?
What type of force is friction?
What gives rise to dry friction?
What gives rise to dry friction?