Question

Most of the machines use ball bearings in order to reduce friction. How is rolling more efficient than sliding?
1 point
the mass of the object reduces
it provides lubrication between the surfaces
interlocking between the surfaces increases
the area of contact between the surfaces is low

Answer 1

Answer:

the area of contact between the surfaces is low

Explanation:

as we know rolling friction is less than sliding friction.

for rolling the area of contact between the surfaces is low