4
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4 Way Bugatti Tug of War
The force on each car is purely longitudinal because the restraining force of necessity runs thru the central point (origin). For example, the East and West forces cancel so far as the origin is ...
- 4,259
4
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Accepted
is a positive acceleration indication that velocity must be positive?
No, positive acceleration, alone, does not need to imply positive velocity. Another term for "acceleration in the opposite direction of the velocity" is just "deceleration".
The ...
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4
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Is the effect of weight-to-horsepower ratio linear?
If we ignore friction and drag we can revert back to,
One horsepower is equal to 745.7 watts. one watt is 1kg force moving 1-meter per second.
a car with N times power is being pushed by N times force,...
- 22.8k
3
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Does more downforce affect the acceleration and top speed?
You do not want to overcome the force of static friction when accelerating because that's when the dynamic friction takes over and your wheels slip. That means that the force applied on the edge of ...
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3
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Calcultate speed from accelerometer for runner
You are unlikely to get any useful results from this, for several reasons.
The accelerometer "x,y,z" directions are relative to the accelerometer. Since the runner's leg is rotating, they are ...
- 12.6k
3
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Are there offsets in these accelerometers signals?
Alhtough this answer should be awarded to Pete, because he has spotted it first.
The accelerometer has a sensitivity of 5%, which corresponds to 100[mV/g]. what you are measuring is 0.1[m/s^2], which ...
- 24.3k
3
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Measuring the road surface quality
While the acoustic analysis idea may* work, I think the accellerometer data would be much easier to analyze. If you are looking for something that can give you better rates of data, try looking into ...
3
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Is there a way to simulate the drag effect created by acceleration while in a stationary object?
The rides in Disneyland do a great job of combing the visual cues of the ride with actually accelerating the vehicle or boat or rocket but in a carefully designed short span giving the impression of ...
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2
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Power needed to accelerate metal powder through two spinning wheels
You actually don't need to know the force on the wheel to work on the power. Just look at the kinetic energy of the powder. Kinetic energy = $(1/2)mv^2$. For 0.013 kg of powder, the kinetic energy ...
- 2,676
2
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Why are the two acceleration considered as a1 and a2 here and find acceleration of 6kg mass?
As posed, you have three unknowns - $a1$, $a2$, and $a3$. The tension on the cable is everywhere uniform, but the accelerations are different because the static force components affecting the tension ...
- 5,105
2
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Can a mouse use acceleration to track movement?
In principle yes, it can be done. It would be enough to put a MEMS accelerometer inside anything with an MCU and the rf component.
The device should work like an Inertial Measurement Unit (IMU) which ...
2
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Effect of centripetal acceleration on angular acceleration
When working with tangential and normal directions/coordinate system in the circular motion, you can thing of:
tangential acceleration: the change in the magnitude of velocity
normal acceleration: ...
- 24.3k
2
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If every action has an equal but opposite reaction, then how is acceleration possible?
When you push on a block, your hand applies a force on that block. An "opposite force" then comes into existence but exists elsewhere. It is not also applied onto the block. It is applied by ...
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Measuring the road surface quality
As suggested I would try to use accelerometer. Below you will find a link to source code that might be helpful. I used a ADXL 345 accelormeter in combination with a TIVA ARM Cortex M4 Microcontroller. ...
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2
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Construct "Modal Coordinates Time History" from transfer function and test accel-time data
I assume you will be doing this in a software, matlab or Abaqus for example, it’s not particularly easy thing to do with your given info, but. Perhaps this example method will help
Abaqus
Infos at ...
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2
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Obtain velocity by using accelerometer data
First of all a couple of pointers:
Essentially what you are proposing is integration.
Whether the result is acceptable that is depended on the problem specifications.
Now, some details on the main ...
- 24.3k
2
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Is there a way to simulate the drag effect created by acceleration while in a stationary object?
"the drag from acceleration"
This isn't called drag. It's just called force or perhaps inertia.
No you can't, not completely stationary anyways. The body detects forces based on ...
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Is the effect of weight-to-horsepower ratio linear?
Acceleration is determined by power-to-weight ratio. Two vehicles with the same power-to-weight ratio will accelerate at the same rate.
Note however that top speed in level motion does not depend on ...
- 15.3k
2
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Understanding data received from sensor (Twos complement)
the L and H likely represents LOWER and HIGHER. So the ...
- 1,252
1
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Order of matrices when rotating a vector
I know how much the frame of reference is rotated along the x and y axes and I know the position of the vector in this frame of reference.
If you know how much, then you must know the order. How much ...
- 5,105
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How do rollercoaster designers calculate the ideal curve?
Although, I've never had the opportunity to work in the design of a rollercoaster, I suspect the idea is that there is a general idea of the rollercoaster, and then every section is checked that it ...
- 24.3k
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is a positive acceleration indication that velocity must be positive?
I will rephrase DKNGuyen's answer (which is correct - I upvoted ).
I assume that the positive (+) sign is for position, velocities and acceleration is to the right.
The object is starting from rest. ...
- 24.3k
1
vote
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How to get the normal acceleration
You are almost there.
In order to calculate the tangential and the normal acceleration you need to take them as vectors.
The angles are
$\theta= \arctan(16/12)=-53.13 deg$ for velocity
$\phi= \...
- 24.3k
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Are there offsets in these accelerometers signals?
You are using a piezo electric accelerometer. There are always always always offsets and low frequency noise on a piezoelectric accel. Depending on the charge amp, anything below about 3 hz is ...
- 2,676
1
vote
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Acceleration of spool on conveyor belt
Point $B$ is the system's initial instantaneous center. So the acceleration of point $A$ is equal and opposite to the acceleration of $G$ at $t=0$. This is the trick to solving this problem.
There is ...
- 5,105
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Acceleration of spool on conveyor belt
Since the conveyor belt is resting, the last equation does hold's true. The fact that it doesn't, suggests to me that there is some numerical error in the calculations.
I've run through your equations ...
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1
vote
Accepted
Euler rotations and acceleration
First of all you need to be about which reference frame you are estimating the acceleration of A. I assume you need the accelation of A wrt to the inertial frame of reference.
The most generic way is ...
- 24.3k
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Calculate car acceleration from torque
You are fine. I'm not checking your work, but if you know engine torque, the using gear ratios you can calculate torque at the wheel. Force at the road is torque divided by wheel radius, and then A =...
- 7,148
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Conversion from LSB to mg not making sense for accelerometer
I couldn't add a comment (new to the forum) so posting in the answer section. Bosch has since acknowledged this to be an error and updated the datasheet's errata.
They have added a 3/2 factor to the ...
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Robot velocities based on IMU data
Unfortunately, the arrangement you show won't work very well. There are a whole raft of reasons, but they boil down to two classes - gimbal lock and singularities.
I'll try to illustrate the problem ...
- 5,105
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