Question

a. Name the type of friction in each of the case above
b. Name the friction that requires less effort
c. Give any one cause of friction​

Answer 1

Answer:

a)Pushing- static friction.

pulling - rolling friction.

b)rolling friction requires less effort in the above figure since the surface area in the contact is less.

c)cause of friction- the irregularities present on the surfaces(roughness of the contact surfaces).

Answer 2

Answer:

in (a) friction is static friction

in (b) friction is rolling friction

rolling friction requires less effort

roughness of surface is a cause of friction