General Knowledge - Basic General Knowledge - Discussion

Thanks all for explaining.

Sliding friction is when objects such as a cube slide on their surface.

Rolling friction is when an object rolls such as a circular barrel, this type of friction includes lesser contact and is much better to sustain.

Dynamic friction is essentially sliding friction when objects rub together.

Static friction is the friction experienced by the object when it is at rest and the friction required to overcome before you move on to a different type of friction explained above.

I hope this helps everybody.

Any object roll when there is no friction.

Any object rolls when there is no friction. So, Sliding to Rolling is correct.

What is dynamic and static?

Yes, right @Spandana.

Well said @Santosh. It is all about the point of contact versus the axis of rotation.

The friction is increased on the sliding object at the time the sliding force is converted to rolling process.

Its wrong because it an object is static it has 0 friction so answer is D.

Friction between the two types of contact rolling & slides but they moving on what type of area that's details may be help like water hill.