Particle-Rod Collision: Rotation or Translation?

  • Thread starter Thread starter amk_dbz
  • Start date Start date
  • Tags Tags
    Rotate
AI Thread Summary
In a collision where a particle strikes a rod at one end in space, both rotation and translation occur due to the conservation of linear and angular momentum. The outcome depends on factors like the angle of impact and whether the collision is elastic or inelastic. If the particle hits perpendicularly to the rod's length, it will cause the rod to rotate while also translating. The distribution of force during the collision determines how much of the momentum contributes to rotation versus translation. Understanding these principles clarifies the dynamics of the collision scenario.
amk_dbz
Messages
41
Reaction score
0
A particle hits a rod at one of its end in space.
Now will the rod rotate or translate or do both...What part of the force goes into translation/rotation ??
If the above scenario happens in air, what will differ?
 
Physics news on Phys.org
There are several things to consider--whether this is an elastic or inelastic collision and what angle the particle strikes the rod.

Regardless, conservation of linear and angular momentum apply for the system as a whole, so if the particle doesn't come in straight along the length of the rod, the rod's going to rotate after collision.
 
But why would it rotate and not translate??
(assume elastic collision and the velocity of particle is perpendicular to length of rod)
 
It's going to do both. Angular momentum and linear momentum are conserved quantities.
 
Ok, i seem to get it now. Just wasn't sure.
Thank You for your Help. :approve:
 

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »
Thread 'Beam on an inclined plane'

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
View full post »

Similar threads

I The proportion of kinetic energy of a rotating rigid body?
Replies
7
Views
1K
I Why does a free rigid body rotate only about its COM when F(ext) is applied?
Replies
7
Views
1K
Lagrangian mechanics - rotating rod
Replies
3
Views
2K
B Question about the definition of Torque Equilibrium
Replies
14
Views
732
I Energy of spinning objects as axis of rotation moves
Replies
1
Views
1K
I Forward momentum of mass due to inertia
Replies
4
Views
1K
Tension of a rod rotating on a horizontal table about a vertical axis
Replies
12
Views
2K
A Order of rotations due to torque in 3DOF in simulations
Replies
2
Views
1K
Wheel moving in rotation and translation
Replies
15
Views
2K
B Force Profile of a Hinged Rod on the Ground
Replies
3
Views
849

Hot Threads

Recent Insights

Back
Top