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giraffe714's latest activity
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
Okay, yeah, that makes sense, so the ##F_x = Fcosθ = 2k(\sqrt(x^2+y^2+(z - S)^2) - l_0)cos(arcsin(\frac{S}{\sqrt(x^2+y^2+(z - S)^2)}))##...
Mar 25, 2024
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
ohh, so it's just trigonometry now right? yea... yea I think that makes sense, so then $$ V = k*\sqrt(x^2+y^2+(z - S)^2) \Rightarrow...
Mar 25, 2024
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
What is that diagram trying to say exactly? That the x component of the force is along the x direction..?
Mar 25, 2024
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
Ohh, well it'd be sqrt(x^2+y^2+(z - S)^2), right?
Mar 25, 2024
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
Oh, yea, that makes sense. So I don't even have to derive an expression for V in terms of ##\phi##? That's a relief. How far is it from...
Mar 25, 2024
G
giraffe714
replied to the thread
Force components for mass attached to two springs
.
What do you mean by this? Why don't the springs change length when the mass is being displaced from equilibrium? It can be at any...
Mar 25, 2024
G
giraffe714
posted the thread
Force components for mass attached to two springs
in
Introductory Physics Homework Help
.
So at first I tried to express the potential energy as a function of x, y and z, but since I'm not quite sure about the geometry of the...
Mar 24, 2024
G
giraffe714
reacted to
PeroK's post
in the thread
Finding slip-off angle for mass off of sphere?
with
Like
.
I've looked at your original post and it has many errors. It needs a complete rewrite - including checking for dimensional coinsistency...
Mar 13, 2024
G
giraffe714
reacted to
kuruman's post
in the thread
Finding slip-off angle for mass off of sphere?
with
Like
.
Incorrect. It is a generalized coordinate (as shown in the picture that you posted) that replaces ##x## and ##y## subject to the...
Mar 13, 2024
G
giraffe714
replied to the thread
Finding slip-off angle for mass off of sphere?
.
If I'm understanding this correctly, the constraints represent the angle ##\theta## when the mass slips off, correct? Or are you simply...
Mar 13, 2024
G
giraffe714
reacted to
kuruman's post
in the thread
Finding slip-off angle for mass off of sphere?
with
Like
.
You have not specified the generalized coordinates in a diagram. In my opinion, that is a must when you use Lagrangians. Furthermore...
Mar 13, 2024
G
giraffe714
replied to the thread
Finding slip-off angle for mass off of sphere?
.
The problemset was on the Lagrangian, I guess I just didn't realise there was an easier way. Thanks for pointing it out though.
Mar 13, 2024
G
giraffe714
reacted to
PeroK's post
in the thread
Finding slip-off angle for mass off of sphere?
with
Like
.
I haven't checked your work, but ##\dfrac {R^3}{g}## is dimensionally inconsistent as an answer.
Mar 13, 2024
G
giraffe714
posted the thread
Finding slip-off angle for mass off of sphere?
in
Introductory Physics Homework Help
.
[Rewriting this as per the suggestions. Thanks once again.] I won't be using the Lagrangian because it was never explicitly stated that...
Mar 13, 2024
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