Question

why is Dynamic Friction is slightly less than the limiting friction?

Answer 1

But once the block is in motion, it takes time to interlock between the irregularities of two surfaces. Also, the body gains the inertia of motion. So, the dynamic friction(also known as kinetic friction) is less than limiting friction.

Answer 2

Answer:

Because the surfaces in contact are different in nature, dynamic friction is slightly less than limiting friction

Explanation:

• Dynamic friction is the resistance to relative motion between two surfaces that are in touch when they are moving in relation to one another.
• Limiting friction, on the other hand—also referred to as static friction is the maximum amount of friction that can exist between two surfaces before they begin to move in relation to one another.
• Because the surfaces in contact are different in nature, dynamic friction is slightly less than limiting friction

• Other factors that contribute to dynamic friction include the development of a thin film of lubricant between the surfaces, which lowers the frictional force even more.
• This explains why limiting friction is typically higher than dynamic friction and why it is simpler to keep an object moving than to start it moving.

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