All Questions
Tagged with building-physics mechanical-engineering
16
questions
0
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36
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Mechanism to even out force from linear motion
Not sure exactly how to explain this, but I am looking to use a threaded rod connected to a motor, to push and pull open a gate valve. My idea for this is to attach a nut to the handle of the pull/...
1
vote
2
answers
43
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Impact of decreasing weight from a part of body w.r.t tipping
If I decrease the weight from top portion of the body keeping all dimensions same, the center of mass shifts downwards, but does it makes it more stable against tipping from perpendicular forces ?
...
- 113
1
vote
3
answers
140
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Tensile Force on Line of Bolts
I'm presented with a problem requiring some analysis to determine if an antenna bracket mounted to a concrete blockwork wall is sufficiently strong enough to endure a wind load given the known surface ...
- 13
3
votes
2
answers
315
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Modeling rigid body dynamics: Trouble with equations, encountering nonsense answers
Hi, I am working on modeling a simple rigid body dynamic system through a certain range of motion. Here is the picture of the system.
I am trying to solve the system for the variables $x_1'', y_1'', ...
- 31
6
votes
2
answers
64
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Is a single large impact better than several small impacts for breaking ice
I'm designing a device that uses impact to remove ice from sidewalks. I have a question about how to best design the impact mechanism.
I can design it to deliver several light impacts or fewer harder ...
- 71
1
vote
1
answer
160
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Inertial Forces while analysing forces on a Piston in a Slider - Crank Mechanism?
I get that we are analysing the Piston in a non-inertial frame of reference, but the point of my question is that according to D'Alembert's Principle, whenever an inertial force comes in the line of ...
- 21
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votes
1
answer
114
views
Do concealed door closers exacerbate wear on a door's hinges?
Not being of an engineering background, I was first inclined to think that a door closer would reduce horizontal load on all hinges and not contribute any support in the vertical dimension.
However, ...
- 11
2
votes
1
answer
452
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Can a neutrally bouyant helium balloon be suspended in air using magnet entrapment?
The above picture is a basic concept of how a levitron toy works.
Could the top floating peace stay entrapped in the magnetic field without having to spin if the edges of the balloon keep the top ...
user4139
2
votes
3
answers
129
views
Building a machine from an ideal physics problem
I have a physics professor for whom I'd like to build a machine. Featured in a problem he is notorious for assigning students, originally from Kleppner and Kolenkow's "Mechanics," the machine causes ...
- 21
0
votes
1
answer
102
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Has anyone achieved significant energy savings by increasing the cooling setpoints in retrofit office buildings, in practice?
I have a simulation based research vs. practical experience type question:
There are a number of academic research papers available which claim 20% to 40% cooling energy savings by increasing the ...
- 101
-2
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2
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2k
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How to make a pulley system with a mechanical advantage of 0.5 [closed]
Problem
Hi I was working for an engineering club and we needed to do this as soon as possible:
We wanted to make a pulley system with a mechanical advantage of 0.5
I know that we have to do ...
1
vote
1
answer
188
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Dimensionless Thickness
I have encounter this notion: "Dimensionless Thickness". Does anyone have any idea how to interpret this? One can find such a term here.
My interpretation is that the name comes from the fact that ...
- 614
3
votes
1
answer
196
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Recreating Focaults Pendulum
I am having issues building a recreation of Focaults Pendulum (basic, inexpensive, undergrad project). At this point, I am going to purchase aircraft cable or suspension cable unless someone can ...
- 33
0
votes
1
answer
2k
views
Rubber Band for Belt in Belt Drive system
Looking to drive a series of belts for lateral translation using a series of pallet bands (92" rubber bands about 1" wide). Approximately 16 bands would be driven by a singular band as illustrated (...
38
votes
2
answers
19k
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What is the purpose of these diversions in a natural gas line?
The campus where I work has a long covered walkway (~.5 mile) which has several labeled pipes running under the roof (chilled water, fuel oil, air...). All of the pipes run dead straight except for ...
- 483