Question

which of the following shows that friction exists between two bodies.​

Answer 1

Answer:

The friction that exists between two surfaces in contact, when there is no relative motion between them is called static friction. Only when the relative motion starts the sliding friction starts to act. ... When two surfaces move relative to each other, or they have a tendency to move relative to each other

Answer 2

Answer:

parallel to contact surface

Explanation:

The property by virtue of which a resisting force is created between two rough bodies that resists the sliding of one body over the other is known as friction. The force that always opposes the motion of one body over the other body in contact with it is known as the force of friction or frictional force.