Ididn't get it at first, then I started breaking it down.
I often find breaking the movements down, sort of like addition of vectors, works for my mind!
Thank you all so much, I feel confident that I've got this one right, though I will still be checking with my tutor tomorrow as I'm certain this was not covered in our lessons, and I want to make sure that I'm not expected to demonstrate a different method!
Ok, I agree on the height at S=0.022 as 0.0003m.
From that I worked out that a constant equal to the total energy multiplied by mass was equal to 1/2v^2 plus gh, which gave a value of 0.983*m.
Then to get maximum height (where Ek is 0) I have mgh=0.983m, thus gh=0.983, so h=0.983/9.81, which...
Doing a quick adjustment (I am using excel to work it all out so changing variables is easy) I suspect he changed it from 0.4m/s to 1.4m/s. 0.4 comes out with an amplitude of about 100mm, which is much more like a simple pendulum!
On getting significantly more on amplitude, my first...
The problem frames it that the pendulum is displaced horizontally by 0.022m when the bob is moving at 1.4ms-1. It then gives you the length of 0.8m and asks for the Amplitude and Period.
Period is 2*pi*root(length/gravitational constant, so that's simple enough to calculate.
Amplitude I have...
Thanks all! I used the energy side to work it out, I ended up with an Amplitude of 0.388m and a Time period of 1.79s - it all seems reasonable, does this look correct?
[Mentors' note: moved here from the technical forums after the thread was already fully developed, so no HW template]
Hello all!
I have a problem which I am beginning to suspect I am either unequipped to solve, or which does not have enough details! I can see, in my mind, the problem, but I...
Hello everyone!
I am brainstorming a project which will require an adjustably damped shaft connector, which is a term I'm making up and I think it's about right.
The shaft will be driven at one end, with an intermittent drive. There will be a shaft dampener after this, which will cushion...
Thanks all for the replies again!
So I am now considering using a pair of vertical spinner wheels in a dustpan designed bot, where the wheels are beside one another and linked together with gears. I reckon I'll use the shock absorbing rubber mounts akin to in the sprocket mount of a motorcycle...
Thanks all for the replies!
Annoyingly, this was a while ago so I cannot offhand remember the way I worked out the speed. I think I worked out the speed in m/s based on diameter and differential pressure, and then worked around 1 second. For obvious reasons, most "flow through a pipe"...
Whilst perusing a D&D forum, I stopped to answer a question someone put out which was "what would happen if we used the gate spell to open a portal to the middle of the sun?"
I replied (this was a while ago) and whilst I'm reviewing it, I am troubled by the fact that this uses such high forces...
Thanks for the replies!
So, I had considered a pair of counter-rotating drums but my corns are:
1: The weight limitations means having 2 drums on opposite sides of the bot would result in two less dangerous weapons, which is bad. I need to get all the weight in one drum, ideally
2: Having two...
The premise is that whenever you watch Battlebots or Robot Wars, there's usually a robot on there which has a vertical drum spinner which weighs half the robots weight and spins at thousands of RPM, and whenever the robot turns, it cocks one wheel in the air due to the gyroscopic forces at play...