Question

which one of these characteristics does a smooth surface has​

Answer 1

Less Frictional force

Answer 2

Question - Which one of these characteristics does a smooth surface has?

a. Less frictional force

b. More frictional force

c. Sometimes less and sometimes more force

d. All of above

Answer - Smooth surface has less frictional surface.

• Friction is a resistive force that opposes movement of object on a surface.
• Friction occurs due to micro hills and valleys in surface.
• These are absent in smooth surfaces and hence, friction is minimum there.
• Lubrication of rough surfaces with oil or water fills the valleys, making them smooth and hence decreasing the friction.
• Ice skating is an example of movement on smooth surface with less friction.