Why is rolling friction is less than static friction

Question

Answer

Rolling friction is less than static friction because static friction or sliding friction acts tangential to the surface which is having more frictiona as compare to rolling friction.

Answer

Rolling resistance is usually less than static friction because the surface of contact is very very small in real life so the net normal force is also small and not enough like the static friction to prevent the body from sliding and keep it unmoved and static friction also increases with the increase of the external ...

Answer

Explanation of why rolling friction is less than static friction:

Nature of Contact:
- Static friction occurs between two surfaces at rest, while rolling friction occurs when one surface is in motion.
- Rolling friction involves less resistance as the points of contact continually change, reducing the overall friction force.

Surface Interaction:
- Static friction involves interlocking irregularities between surfaces, leading to a strong resistance to motion.
- Rolling friction, on the other hand, involves less interlocking due to the rolling motion, resulting in lower resistance.

Energy Dissipation:
- In static friction, more energy is dissipated as heat due to the constant interlocking of surfaces.
- Rolling friction dissipates less energy as heat since the rolling motion allows for smoother movement.

Contact Area:
- Static friction typically involves a larger contact area between surfaces, leading to higher resistance.
- Rolling friction occurs over a smaller contact area, reducing the friction force exerted.

Conclusion:
In summary, rolling friction is less than static friction due to the nature of contact, surface interaction, energy dissipation, and contact area. The rolling motion allows for smoother movement and less resistance compared to the interlocking nature of static friction.

Answer

Rolling friction is less than static friction because static friction or sliding friction acts tangential to the surface which is having more friction as compare to rolling friction.Example : A table with wheels are more easy to push than without wheels.

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