Calculating acceleration offset by C.G.

  • Thread starter Thread starter The Don
  • Start date Start date
  • Tags Tags
    Acceleration
AI Thread Summary
The discussion focuses on calculating the acceleration readings of an accelerometer not positioned at the Center of Gravity (C.G.) of an object. The user is trying to determine how to adjust the readings from a specific location (Xa, Za) to what they would be at the C.G. The conversation includes a reference to a solution attempt involving a transformation matrix, which the user finds confusing. There is a suggestion that if this is a homework question, the user should refrain from using online resources, while also recommending posting in a general physics forum for potentially better insights. The discussion highlights the complexities of understanding acceleration offsets in relation to an object's C.G.
The Don
Messages
11
Reaction score
1

Homework Statement


I'm trying to calculate the acceleration an accelerometer would read NOT placed in the Center of Gravity of the object. Let's look at the figure below. The accelerometer was placed in location (Xa,Za) and not in the CG of the object. Given that the accel's output is a_x and a_z at this location (Xa,Za)...what would've the accelerometers have read if placed on the C.G. of object?

upload_2015-12-7_17-31-32.png


Homework Equations

The Attempt at a Solution


Here is an attempt at the solution (http://basicairdata.blogspot.com/2014/05/inertial-measurement-unit-placement.html) however I don't fully understand how they got the transformation matrix.
 
Physics news on Phys.org
Is this homework? If yes, you probably should not be using the Internet for your attempt. If no, you should put this on the general physics forum.
 
The general physics forum usually gets better answers in my opinion.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Calculating acceleration offset by CG
Replies
1
Views
2K
Rotating platform on top of another rotating platform
Replies
6
Views
2K
Calculating Centripetal Acceleration at Earth's Equator
Replies
1
Views
1K
Unreasonable answer for acceleration of an electron in field
Replies
3
Views
1K
Calculate average speed/acceleration for the given function
Replies
1
Views
2K
Calculating Elevator Acceleration: Solve for F=ma
Replies
3
Views
2K
Gravitational acceleration comparison
Replies
5
Views
2K
How Can You Calculate Mass Using Force and Acceleration?
Replies
2
Views
2K
Problems with calculating the acceleration
Replies
5
Views
2K
Acceleration vs Time Bungee Graph
Replies
1
Views
5K

Hot Threads

Recent Insights

Back
Top