How can an object tip and slip at the same time?

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SUMMARY

The discussion centers on the conditions for tipping and slipping of an object, specifically when the critical force (P critical) equals the normal force multiplied by the static friction coefficient (Us N). It establishes that tipping occurs when P critical is less than Us N, while slipping occurs when P critical exceeds Us N. The mathematical relationship derived indicates that for a rectangular object, the static friction coefficient (Us) must equal the ratio of half its base length (b) to its height (h). The conversation also touches on scenarios where an object may tip and slip simultaneously, particularly in dynamic situations like ice skating or bowling.

PREREQUISITES
  • Understanding of static and kinetic friction coefficients
  • Basic principles of mechanics, including tipping and slipping
  • Familiarity with the concepts of center of mass and normal force
  • Mathematical skills to analyze force relationships in physical systems
NEXT STEPS
  • Study the mechanics of tipping and slipping in rigid body dynamics
  • Explore the mathematical modeling of friction forces in various scenarios
  • Learn about the effects of different shapes and weights on tipping behavior
  • Investigate real-world applications of tipping and slipping, such as vehicle dynamics
USEFUL FOR

Students of physics, mechanical engineers, and anyone interested in the dynamics of objects under force, particularly in contexts involving tipping and slipping behaviors.

Conductivity
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The conditions are for tipping and slipping. Tipping: If P critical < Us N then it tips

Slipping: If P critical > Us N then it slips

What if we have P critical = Us N. Any increase will make it slide and tip...?

If we took a rectangular shape object with Height h and length L so half its length is b. We get that if we want the object to tip if p is acting at the highest point we get, P*h =w b. If we want P at this point to equal the static friction then, P = Us N, wb/h = Us W So Us must equal b/h
 
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Conductivity said:
How can an object tip and slip at the same time?
I take it you've never been ice skating :smile:
 
phinds said:
I take it you've never been ice skating :smile:
Or bowling.
 
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Or watching cars skid and roll.

Conductivity said:
The conditions are for tipping and slipping. Tipping: If P critical < Us N then it tips Slipping: If P critical > Us N then it slips

Cite your source please. And check to see that it says that when the object starts tipping that it stops slipping.
 
Last edited:
Conductivity said:
How can an object tip and slip at the same time?
When sliding over a level surface? When the kinetic friction coefficient is greater than: horizontal_COM_to_base_edge_distance / vertical_COM_position.
 
Last edited:
anorlunda said:
Or watching cars skid and roll.
Cite your source please. And check to see that it says that when the object starts tipping that it stops slipping.
It is just my college book, It didn't mention that.

I just wanted to know how the object will behave when it is about to tip and slip and you increase the force by a tiny amount. How the math will work out?
 

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