Sliding Friction on a Wheel: How Does Static Friction Prevent Motion?

In summary, the conversation discusses the role of static friction in opposing a sliding wheel. It is explained that static friction only acts when the body is about to move, and the speaker argues that if the wheel has both linear and angular velocity, kinetic friction should be used instead of static friction. The concept of no slippage and using the static friction coefficient is also mentioned.
  • #1
DZABHINAV
7
0
How is a sliding wheel is opposed by static friction?
Static friction acts only when the body is about to move.
My point is
if the wheel is has a linear velocity and angular velocity than kinetic friction should act on the body rather than static friction.
 
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  • #2
DZABHINAV said:
How is a sliding wheel is opposed by static friction?
Static friction acts only when the body is about to move.
My point is
if the wheel is has a linear velocity and angular velocity than kinetic friction should act on the body rather than static friction.

Look at the point where the wheel contacts the ground. Is the wheel turning without slipping? That is, is the linear velocity just related to the angular velocity and the radius? Or is the wheel sliding on the ground as well as rotating? If there is no slippage, you would use the static friction coefficient.
 
  • #3
that means cause the point of contact is motionless, we call it static friction.
thanks a lot.
 

1. What is sliding friction on a wheel?

Sliding friction on a wheel refers to the force that opposes the motion of a wheel as it slides across a surface. It is caused by the roughness and irregularities of the surfaces in contact.

2. How does sliding friction affect the performance of a wheel?

Sliding friction can significantly decrease the performance of a wheel by causing it to slow down and require more energy to maintain its motion. It can also cause wear and tear on the wheel and the surface it is sliding on.

3. What factors affect the amount of sliding friction on a wheel?

The amount of sliding friction on a wheel is affected by factors such as the weight of the wheel, the surface it is sliding on, the speed of the wheel, and the materials and design of the wheel itself.

4. How can sliding friction on a wheel be reduced?

To reduce sliding friction on a wheel, one can use lubricants such as oil or grease to reduce the roughness of the surfaces in contact. Additionally, using smoother and harder materials for the wheel can also help reduce sliding friction.

5. What are some real-world applications of studying sliding friction on wheels?

Understanding sliding friction on wheels is important in many industries, such as transportation, manufacturing, and sports. It can help improve the design of wheels for better performance and reduce wear and tear on machinery and equipment.

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