Explain why sliding friction is less than static friction.

Explanation:

The static friction is the force required by the surface in contact with another surface to overcome inorder to start moving. When two surfaces are in contact they get interlocked with each other and static frictional force generates. As this interlocking is not strong, less force is required to break this interlocking between these surfaces. Due to this reason the sliding friction is less than static friction.

Final Answer:

Hence, less force is required to overcome the interlocking between the two surfaces that is why the sliding friction is less than the static friction.