Questions tagged [force-measurement]

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Converting values from Tensile Strength tester to newtons

I have a Tensile Strength tester from TMI model 84-76. I am getting data from this machine over the serial port. I don't understand what the values are that it is streaming during the test. I do know ...
Jadefox10200's user avatar
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Counter-intuitive behavior of chain drive

In a chain drive system, sprocket 2 has a motor attached, sprocket 1 is being driven. The blue construction is static and immobile. Before starting the motor, both load cells show 0 (tare). ...
FlegmatoidZoid's user avatar
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Is it possible to simulate inertial load using brake?

Suppose to have an engine attached to a flywheel, I add power, the flywheel start to rotate and oppose a resistance to motion. More power, more resistance. I'm wondering if I can simulate this ...
Mattia Piron's user avatar
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Forces on a catenary cable span

This relates to an unusual action on a catenary cable span and is not covered by the many available calculators or standard formulas. I'll add a diagram 'tomorrow' if attention warrants. (0400 now - ...
Russell McMahon's user avatar
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1 answer
174 views

How do I relate tongue weight to weight x distance?

The specification for car hitches routinely state the tongue weight, but do not specify how far that weight can/should be applied. What am I missing? Shouldn't the maximum bending moment be the one to ...
Sam7919's user avatar
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Benefits of a steel ball in janka hardness test

The Janka hardness test is a test used to measure wood's resistance to denting. The test involves pressing a steel ball that is 0.444" in diameter halfway into a piece of wood and measuring the ...
jesse_b's user avatar
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What would be the Force Balance on this situation:

I'm struggling to find the correct Force balance in the following situation: The black parts are hard stopers. The blue part is moving perfectly aligned with the Y-axis in the negative direction. The ...
Bruno Fernandes's user avatar
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Practical question on force in a molding application

I have a molding machine that is holding a spring loaded mold closed. The mold is basically two blocks of steel, but one half has a slide system that is pushed open by a number of gas springs. Those ...
wenh12's user avatar
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Truss beam like structure strength per height

The second beam is 2x the height of the first one. Is 1 stronger then 2 to bending force (arrow shows direction, supported on the sides)? If it does, I'm trying to figure out why, because they both ...
Simon's user avatar
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1 answer
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Distributing force / load across two measurement devices (load cells)

I am looking to measure the force applied (in this case by a foot to a pedal). I have a working prototype that allows up to 450N of force, but wish to double this. The load cell I have been using is ...
James Hounslow's user avatar
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How does a single point load cell eliminate the inluence of moment/load placement

All descriptions I have been able to find mention some variation of "due to their geometrical design single point load cells are immune to load placement" with no explanation on how is it ...
Chumanista's user avatar
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Lifting Analysis of a 3D cuboid

I have a cuboid of weight W and the Center of Gravity at G. It is being lifted using 4 inextensible strings from the 4 corners: $C_1$, $C_2$, $C_3$ and $C_4$. The figure is something like this: The ...
s6292_1997's user avatar
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How to calculate and of measure the applied force between a motor and a flywheel

I am making a model for a flywheel. For this model, I found a way to calculate the torque and thus eventually the velocity of the flywheel. The flywheel itself will be floating due to magnetic ...
Jarno's user avatar
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What kind of pressure / strain gauge is this?

This is a photo of the backside of a diaphragm strain measurement element. I'm researching strain gauge operating principles, and the one shown below is eluding me. This is not a resistive strain ...
ndemarco's user avatar
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Force required for a power generator in a coal power station

I am unsure about how to word this question properly and I assume that it might take two directions probably because of the unknown variables involved but here goes... On the actual physical power ...
Blurry Sterk's user avatar
1 vote
2 answers
83 views

Problem of lifting of a body using 4 strings

I have a solid object that has been lifted to a hieght by 4 strings. I know the lifting point and the 4 corners of the object. Also the mass and the center of the gravity location of the object is ...
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Calculating torque in planetary gearbox

It's my understanding that in a planetary gearbox, force moves through the system via four mechanisms: the ring gear, the planet gears, the planetary carrier, and the sun gear. I'm trying to ...
Bez_almighty's user avatar
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Spring and damper in series, equation of motion

For the motion in fig 4.1 (a), please check the description of this system in the images above, everything should be there. I get it, assuming the positive direction is downward, the spring tension is ...
S R's user avatar
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2 answers
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Will the torque applied to a circular object be the same if the object isn't aligned in the center of the Torque?

I'm a student designing a system to automatically turn a steering wheel. In this design the motor will be in the center of the steering wheel and it will apply it's torque on the steering wheel ...
Rosjnski's user avatar
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1 answer
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Calculating the maximum lifting force of an average car

I'm interested to know how much kilograms force an average car can produce. I made the following calculations to answer my question but I'm not sure if I'm right or wrong! Imagine we have a 1.8L ...
user37159's user avatar
1 vote
1 answer
74 views

Force from screw on the clamp

I want to find out the force the screw (M5 , 12mm long) exerts on the clamp so it can hold the cylinder as shown in the image. I want to know whether the clamp can displace enough to hold the cylider ...
Rohan Sanghai's user avatar
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Vector homework problem [closed]

This is a question from Engineering Mechanics by Shames. I am unable to resolve this as the question mentioned.
Heisen Berg's user avatar
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2 answers
218 views

Inertial Force expression in spring

Let there be a spring as shown. And this is stretched to point C and released, then force exerted by spring on mass in region X2 is "- kx" . But This springs gains kinetic energy at mean ...
Kane's user avatar
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How can rod load reversal points determine leakage of valves in reciprocating compressors?

One of the common parameters that is monitored in reciprocating compressors is the net rod load. How can they show which valve has leakage? For example, if the suction valve of the crank end (CE) has ...
Ali Hosseinli's user avatar
1 vote
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Looking for a loadcell in the shape of a truss rod

Today I found myself looking for force measurement device (load cell) that can be easily attached to a educational truss structure (i.e. replace a rod in a truss). I'm sure that there are bound to be ...
NMech's user avatar
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