Forces and moments in a hole puncher

YAPYY
Messages
2
Reaction score
0
What are the forces and the moments of the hole puncher when a load is applied?

The only idea here is a hole puncher is a second class lever.
 
Physics news on Phys.org
Is that the exact text of the question? If so, it seems rather vague to me...

Anyway, what are your thoughts? For instance, do you know what defines a second-class lever?
 
It is actually an assignment regarding on moment and forces in an object. The object that my group has choosen is hole puncher. Second class lever is whereby the load is situated between the fulcrum and the load. That is all I know. According to the assignment , we can assume the magnitude of the forces and moment but I need to know how the forces act and the moment in the hole puncher.
 
Thread 'Need help understanding this figure on energy levels'

Thread 'Need help understanding this figure on energy levels'

This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
View full post »
Thread 'Understanding how to "tack on" the time wiggle factor'

Thread 'Understanding how to "tack on" the time wiggle factor'

The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
View full post »

Similar threads

Punching a hole in a tape moving at relativistic speed
Replies
26
Views
1K
Electron Bands in 2D Semiconductor
Replies
0
Views
2K
I Evaporating black holes and conservation of charges?
Replies
14
Views
3K
What makes up a "current" in solid state physics?
Replies
7
Views
2K
How Does Eddington Luminosity Limit Black Hole Mass Accretion Rates?
Replies
1
Views
1K
B Can we see 2 black holes orbiting each other?
2
Replies
57
Views
4K
Deriving the kinetic energy flux in an effusion process
Replies
4
Views
2K
Convert moment force at lever support
Replies
1
Views
2K
I Inverse Square Law for Black Holes
Replies
32
Views
2K
I Black holes to explode due to evaporation?
2
Replies
57
Views
6K

Hot Threads

Recent Insights

Back
Top