text: # When does slipping occur?
  
  1. Oct 2, 2010
  
  ### candymountain
  
  So im trying to figure out under what circumstances slipping usually occur, and what causes it to occur.
  
  lets assume we have a cart, and there is a static friction mu between the surface and the wheel.
  
  let's say the cart is being pushed at F horitonztally. Fs, force of friction, obviously opposes the motion.
  
  So my question is, when does skipping occur?
  
  is it when l F - Fs l <= Fs ? Also what causes slipping? is it too much torque supplied? are there any other cases in which slipping can occur?
  
  thanks a lot :)
  
  candy~
  
  2. Oct 3, 2010
  
  ### Idoubt
  
  I'm not sure I understand exactly what you said ( what's |F-Fs| <=Fs)
  
  But I would think slipping occurs when Fhorizontal > Ffriction
  
  Ie the ground cannot stop your relative motion.
  Since you need relative motion at the point to stop for rolling ( and walking incidentally) rolling doesn't occur
  
  3. Oct 3, 2010
  
  ### lj19
  
  Slipping could occur when the force exerted on the floor with the wheels is greater than the force of friction. [The applied force is greater than frictional force.] That would could friction to decrease.
  
  4. Oct 3, 2010
  
  ### candymountain
  
  wouldn't that mean the object would accelerate? i'm really confused
  
  5. Oct 3, 2010
  
  ### lj19
  
  It could decelerate or accelerate, which is it slowing down at an increasing speed, or increasing at an increasing speed, but it depends on the amount of frictional force versus the amount of applied force.
  
  6. Oct 3, 2010
  
  ### candymountain
  
  ..... then how does it slip..?
  
  7. Oct 3, 2010
  
  ### lj19
  
  Is this object on an inclined plane or on a flat surface?
  If it is on an inclined plane then it depends on the amount of frictional force versus the applied force. If the applied force pushing it down the inclined plane is greater than the frictional force trying to not push it down, it will "slip".
  
  8. Oct 3, 2010
  
  ### candymountain
  
  in my case i have a car going on a flat surface for few meters, then goes up a ramp.
  
  does slipping occur when it rolls down(when it tries to go up)? i.e. friction force > F applied?
  
  9. Oct 3, 2010
  
  ### lj19
  
  Does the car keep a constant speed?
  Slipping on the ramp [inclined plane] would occur when the force applied is less than the force of friction.
  
  10. Oct 3, 2010
  
  ### candymountain
  
  well there's a constant force aplied to the car, so its accelerating.
  
  oh okay, so how does the flat surface slipping works
  
  11. Oct 3, 2010
  
  ### lj19
  
  Well a car cannot be constant and accelerate at the same time. If there is a constant force being applied before it goes up the ramp, it could change when it reaches the ramp and goes up. To have a constant force going up the ramp, or on a flat surface, the force applied [pushing the car] would have to be equal to the force of friction. If the force of friction is greater than the force applied then the car would decelerate [slow down at an increasing speed] or slow down at a constant speed. If the force applied is greater then the car would accelerate [speed up at an increasing speed], or speed up at a constant speed.
explanation: The document is a discussion thread from a physics forum where a user named "candymountain" asks about the conditions under which slipping occurs for a cart with wheels. The user provides a scenario involving a cart being pushed horizontally and asks when slipping occurs and what causes it. Several other users, including "Idoubt" and "lj19," provide responses, discussing the relationship between the applied force and the frictional force.
  
  The document contains multiple questions and multiple answers to these questions.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # When does slipping occur?
  
  1. Oct 2, 2010
  
  ### candymountain
  
  So im trying to figure out under what circumstances slipping usually occur, and what causes it to occur.
  
  lets assume we have a cart, and there is a static friction mu between the surface and the wheel.
  
  let's say the cart is being pushed at F horitonztally. Fs, force of friction, obviously opposes the motion.
  
  So my question is, when does skipping occur?
  
  is it when l F - Fs l <= Fs ? Also what causes slipping? is it too much torque supplied? are there any other cases in which slipping can occur?
  
  thanks a lot :)
  
  candy~
  
  2. Oct 3, 2010
  
  ### Idoubt
  
  I'm not sure I understand exactly what you said ( what's |F-Fs| <=Fs)
  
  But I would think slipping occurs when Fhorizontal > Ffriction
  
  Ie the ground cannot stop your relative motion.
  Since you need relative motion at the point to stop for rolling ( and walking incidentally) rolling doesn't occur
  
  3. Oct 3, 2010
  
  ### lj19
  
  Slipping could occur when the force exerted on the floor with the wheels is greater than the force of friction. [The applied force is greater than frictional force.] That would could friction to decrease.
  
  4. Oct 3, 2010
  
  ### candymountain
  
  wouldn't that mean the object would accelerate? i'm really confused
  
  5. Oct 3, 2010
  
  ### lj19
  
  It could decelerate or accelerate, which is it slowing down at an increasing speed, or increasing at an increasing speed, but it depends on the amount of frictional force versus the amount of applied force.
  
  6. Oct 3, 2010
  
  ### candymountain
  
  ..... then how does it slip..?
  
  7. Oct 3, 2010
  
  ### lj19
  
  Is this object on an inclined plane or on a flat surface?
  If it is on an inclined plane then it depends on the amount of frictional force versus the applied force. If the applied force pushing it down the inclined plane is greater than the frictional force trying to not push it down, it will "slip".
  
  8. Oct 3, 2010
  
  ### candymountain
  
  in my case i have a car going on a flat surface for few meters, then goes up a ramp.
  
  does slipping occur when it rolls down(when it tries to go up)? i.e. friction force > F applied?
  
  9. Oct 3, 2010
  
  ### lj19
  
  Does the car keep a constant speed?
  Slipping on the ramp [inclined plane] would occur when the force applied is less than the force of friction.
  
  10. Oct 3, 2010
  
  ### candymountain
  
  well there's a constant force aplied to the car, so its accelerating.
  
  oh okay, so how does the flat surface slipping works
  
  11. Oct 3, 2010
  
  ### lj19
  
  Well a car cannot be constant and accelerate at the same time. If there is a constant force being applied before it goes up the ramp, it could change when it reaches the ramp and goes up. To have a constant force going up the ramp, or on a flat surface, the force applied [pushing the car] would have to be equal to the force of friction. If the force of friction is greater than the force applied then the car would decelerate [slow down at an increasing speed] or slow down at a constant speed. If the force applied is greater then the car would accelerate [speed up at an increasing speed], or speed up at a constant speed.
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The document is a discussion thread from a physics forum where a user named "candymountain" asks about the conditions under which slipping occurs for a cart with wheels. The user provides a scenario involving a cart being pushed horizontally and asks when slipping occurs and what causes it. Several other users, including "Idoubt" and "lj19," provide responses, discussing the relationship between the applied force and the frictional force.
  
  The document contains multiple questions and multiple answers to these questions.
  
  Label: multiple-question-and-answer