My question i am trying to solve:
I have successfully done first order equations before but this one has got me a little stuck. My attempt at the general solution below:
$${5} \frac{\text{d}\theta}{\text{d}t}=-6\theta$$
$${5} \frac{\text{d}\theta}{\text{d}t} =\frac{\text{-6}\theta}{5}$$...
I am looking for help on the following:
a) Given the system shown in the figure below, derive the steady flow energy equation from first principle.
b) Again using first principles, show how the energy equation would change for the case when the system is unsteady.
I am trying to learn this...
Hello,
I have completed the question below.
I am just unsure on whether i am correct or not.
I am unsure on Mechanical Advantage. As i have seen a few different equations.
Question:
Answer:
a)
Velocity Ratio = $$\frac{\text{Distance Moved By Effort}}{\text{Distance Moved By Load}}$$...
Hello,
Thank you both for replying.
Both very knowledgeable!
For angular momentum it was a typo. I had:
$$L = I \cdot w$$
$$L = 3.55kgm^2 \cdot 27Rad/s$$
$$L = 95.85kgm^2/s$$
You have just rounded it up to 96.
For Torque i have re calculated to:
$$\text{Torque} = mgl$$
$$\text{Torque} =...
Now i have finished the rest of the question.
Angular Momentum:
$$L = I \cdot w$$
$$I = 3.55kgm^2$$
$$w = 27Rad/s$$
$$ L = 3.55kgm^2 \cdot 27Rad/s$$
$$ L = 9.85kgm^2/s$$
Torque in Axle:
$$Torque = mgl$$
$$Torque = 9.86kg \cdot 9.81m/s \cdot0.12m$$
$$Torque = 11.6N$$
Explain energy...
Thank you both for your help! Very much appreciated! I am now going to attempt to finsh the question off.
My books have now arrived aslo, so i can read them.
Thank you again.
From reading the replies, and reading on the internet i have got this. I have also ordered 2 books to read and learn.
Moment of Inertia = $$mR^2$$
So $$ I = mR^2$$
To find I:
Translate $$F = Ma$$ to $$ Torque = I \cdot \alpha$$
I will complete this when i receive my books.
So now i will...
BvU i am going to get some books on it. So from your equation i can calculate the mass? But as Halc has said he was unable to determine the mass for the wheel. This is why i am struggling. As i can find no way to calculate this.
So how would this question be completed? It is written to be...
Thank you to you both for replying. Very much appreciated.
BvU I am not familiar with the relationships no. I am starting from scratch.
I have watched a lot of videos, and read loads online. But all problems give the mass without calculating it. This is why i am struggling on this part.
Would...
which would then be:
To find f:
f = t/r
f = 4Nm / 0.6m
f = 6.66Nm
T = 6.66Nm x 0.6m
T = 4Nm
So:
m = a/f
m = 27 rads/s / 4Nm = 6.75kg
Mass = 6.75kg
Is this correct?
If not could you help as i am really struggling to learn this.
Hello,
I have this i am learning. I have been trying to find information online but have struggled to find anything which helps me. YouTube usually has good videos, but doesn't seem to on this. This is one topic i have never learned before. But keen to.
I was hoping someone could help me...
Thank you for this.
The links will help me.
I am going to attempt another question to try and get use to doing the calculations.
So i have changed to Mpa.
So this is now correct? So i can use to help solve another question.
Your help is very much appreciated.
I thought angle of twist was correct. Not sure where i have gone wrong there?
I was have another attempt and post.
I hope i get it right this time too!
Thank you for your help. Very much appreciated.