Is friction an evil or foe?
Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. Basic activities like walking and writing on a surface are possible due to friction.
What is friction 8th class?
Friction Class 8 Notes – Chapter 12. The force, which opposes the relative motion between two surfaces in contact is known as friction. It acts on both the surfaces.
Do you agree with this statement friction is both good and evil Explain with examples?
Friction helps us in writting and making drawings. If there were no friction, we would not be able to hold a pen vertically. It is friction that opposes slipping and helps us to hold the pen. also there is friction between our pen and the paper which prevents the pen from slipping on the paper.
Do you agree with the statement friction is both good?
Answer : Yes, friction is both good and bad. Friction is advantageous: 1. While walking as without friction it would be difficult for us to step on the ground 2.
What kind of friction do you know and explain with suitable examples?
1) Static friction – when you apply force and the object does not move. 2) Sliding friction – when the surface if the object moves on other. 3) Rolling friction – when any wheel or ball moves on any surface rolling friction is applied. it is very less than sliding friction.
What is fluid friction and examples?
Fluid friction is friction that occurs when objects move across or through a fluid. Examples: Swimming – swimmer’s body. and surface of water.
What is fluid friction give examples?
Fluid friction is friction that acts on objects that are moving through a fluid. A fluid is a substance that can flow and take the shape of its container. Fluids include liquids and gases. If you’ve ever tried to push your open hand through the water in a tub or pool, then you’ve experienced fluid friction.