Simple impulse force question - force upon impact

  • Context: Undergrad 
  • Thread starter Thread starter Fjolvar
  • Start date Start date
  • Tags Tags
    Force Impact Impulse
Click For Summary
SUMMARY

The discussion centers on calculating impulse force (F) during a collision when the time of impact (Δt) is unknown. The primary formula referenced is F*Δt = m*Δv, where m represents mass and Δv denotes change in velocity. Participants conclude that without time, the only measurable variables are distance, time, and mass, and suggest that average acceleration (a = v/T) can be used to derive force (f = ma = mv/T) if time is determined. No alternative formulas utilizing plasticity or post-collision distance were identified as viable solutions.

PREREQUISITES
  • Understanding of impulse and momentum principles
  • Familiarity with Newton's second law of motion
  • Basic knowledge of kinematics
  • Concept of average acceleration
NEXT STEPS
  • Research methods for calculating impulse force in collisions without time data
  • Explore the role of plasticity in impact analysis
  • Study kinematic equations related to post-collision motion
  • Learn about advanced collision modeling techniques in engineering
USEFUL FOR

Engineers, physics students, and professionals involved in impact analysis and collision dynamics will benefit from this discussion.

Fjolvar
Messages
156
Reaction score
0
Is there a way to calculate the impulse force F if the time of collision is unknown? The only formula I know to calculate this force is F*Δt = m*Δv. Is there a formula that perhaps uses plasticity as a variable instead of time or maybe uses the distance an object moves after a collision? Any help would be greatly appreciated. This is for an engineering project.
 
Physics news on Phys.org
I think no. Because the only measurable variables on a colision is the distance, time and mass. The another things are calculated with that.
 
You can certainly say that if an object of mass m, with velocity v, collides with a surface and takes time T to stop, then it had average acceleration a= v/T. The (average) force exerted on it by the surface (and so the force it exerts on the surface) is given by f= ma= mv/T.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 35 ·
2
Replies
35
Views
5K
  • · Replies 138 ·
5
Replies
138
Views
9K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K