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erobz's latest activity
E
erobz
replied to the thread
How to become brilliant?
.
Thats fine, but they are also saying "How can I be successful in life?". No one knows the answer to that question...except for maybe...
Apr 27, 2024
E
erobz
replied to the thread
How to become brilliant?
.
Do you honestly think the attitude of”I don’t want to be good, I want to be the best” can be fixed by a paid tutor? The kid need...
Apr 27, 2024
E
erobz
replied to the thread
How to become brilliant?
.
I was hoping that was the case. My 8 yr old and I were just having a similar conversation when she didn’t win our games of chess today...
Apr 27, 2024
E
erobz
replied to the thread
How to become brilliant?
.
🙄 How old are you?
Apr 27, 2024
E
erobz
replied to the thread
Where to Pick Up Women In the Sciences?
.
I think it’s the latter! Multiple of them! I can see immediately why they might be in the situation they are in…
Apr 27, 2024
E
erobz
reacted to
docnet's post
in the thread
Where to Pick Up Women In the Sciences?
with
Haha
.
Is this thread really happening? 🫣
Apr 27, 2024
E
erobz
reacted to
Orodruin's post
in the thread
Lagrange equation for block and incline
with
Like
.
The cosine rule is perfectly fine to use for addition of velocities here.
Apr 27, 2024
E
erobz
replied to the thread
Lagrange equation for block and incline
.
Ok, I wasn’t familiar with it by name.
Apr 27, 2024
E
erobz
reacted to
Steve4Physics's post
in the thread
Lagrange equation for block and incline
with
Like
.
To add to what @Orodruin just said (and since I’d already done a diagram!), vector-addition of the 2 velocities using the cosine rule...
Apr 27, 2024
E
erobz
replied to the thread
Lagrange equation for block and incline
.
I doesn’t sound to me like you understand the crux of the problem yet. Let’s start with the straightforward part. What is the vertical...
Apr 27, 2024
E
erobz
reacted to
Orodruin's post
in the thread
Lagrange equation for block and incline
with
Like
.
It most certainly does. Imagine for example that they were parallel. What would the speed be?
Apr 26, 2024
E
erobz
replied to the thread
Lagrange equation for block and incline
.
Pretend you are standing in the ground watching this unfold. What velocity do you measure for the block in the horizontal and vertical...
Apr 26, 2024
E
erobz
replied to the thread
Lagrange equation for block and incline
.
No. The wedge is moving with velocity ##\dot x##, the block is riding on the wedge. ##\dot y## is with respect to the wedge, the wedge...
Apr 26, 2024
E
erobz
replied to the thread
Lagrange equation for block and incline
.
Write the kinetic energy of the block in the inertial frame. ##\dot y ## is w.r.t. the ( accelerating) wedge.
Apr 26, 2024
E
erobz
reacted to
berkeman's post
in the thread
I
Landscape Fabric Roll
with
Like
.
Oh, sorry, I think I totally misinterpreted the term "landscape fabric roll". My wife is an avid seamstress, so there is a of sewing...
Apr 26, 2024
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