Collision and rotation problems?

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SUMMARY

The discussion centers on determining the velocity (v) required for a cube with mass M and length 2a to topple off a frictionless table when it collides with a long block. The cube's moment of inertia is given as 8Ma²/3, and the rotation occurs about one side of the cube. A sketch is recommended to visualize the problem effectively, aiding in understanding the dynamics involved in the toppling process.

PREREQUISITES
  • Understanding of rotational dynamics
  • Familiarity with the concept of moment of inertia
  • Knowledge of basic physics principles regarding collisions
  • Ability to interpret and create sketches for physics problems
NEXT STEPS
  • Study the principles of rotational motion and torque
  • Learn how to calculate the moment of inertia for various shapes
  • Explore the conditions for toppling in rigid body dynamics
  • Review collision theory and its applications in physics
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This discussion is beneficial for physics students, educators, and anyone interested in understanding the mechanics of rotational motion and toppling behavior in rigid bodies.

Japser Lu
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A cube with mass M and length 2a, move in the velocity v on the friction-less horizontal table, when it closes to the end of the table, it is stopped by the long block(the height can be ignored), ask what is the value of v to topple from the table? ( note: use one side of cube as the rotating axis and moment of inertia is 8Ma2/3)
 
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A sketch would help to understand what is going on.

What did you figure out so far? This is a necessary part of homework problem threads.
 
mfb said:
A sketch would help to understand what is going on.

What did you figure out so far? This is a necessary part of homework problem threads.
I figured it out. I remember the concept of topple the object.
 

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