Homework Help: Convert voltage to acceleration

1. Mar 30, 2012

manutdkaki

May i know how to convert voltage to acceleration from accelerometer ?

output voltage = 2.5 v and sensitivity of accelerometer is 9.9mv/g
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Mar 30, 2012

Staff: Mentor

Look at the units you're starting with and what the units are for the conversion constant ("sensitivity"). Do you want to multiply or divide to get the units you're looking for?

3. Mar 31, 2012

manutdkaki

can voltage divide sensitivity of accelerometer to get acceleration result ?

v / mv/g = g

4. Mar 31, 2012

tiny-tim

hi manutdkaki
that's right …

the beauty of units is that they multiply and divide exactly like ordinary fractions

v / (mv/g) = vg/mv = g/m = kg

5. Mar 31, 2012

manutdkaki

v/(mv/g)

v is voltage
mv = milivoltage
g= acceleration

got any book source to prove it ?
thanks

6. Mar 31, 2012

tiny-tim

7. Mar 31, 2012

manutdkaki

i hope can get from instrumentation book to prove it . thanks tiny-tim

8. Mar 31, 2012

jack action

Units are treated as variables. So you can prove it with elementary algebra. I guess you need a book on algebra.