Homework Help: Acceleration vs force

1. Feb 6, 2008

StephenDoty

The figure shows an acceleration-versus-force graph, attached, for three objects pulled by rubber bands. The mass of object 2 is 0.300 . What are the masses of objects 1 and 3?
Part A
kg

Part B
kg

for object 2 the slope is a/F or 1/m or 1/.3kg

For object 3 the slope is a/F or 2a/5F or 1/5F*3a, what do I do now??
And for object 1 the slope is a/F or 5a/2F or 3a/2m what do I do now?

How do I use this information to find the mass of object 3 and 1??????

Thank you

Stephen

File size:
18.2 KB
Views:
1,414
2. Feb 6, 2008

PowerIso

Well, you know the mass of object 2. The graph tells you that 5N = M *5a soooo 5/(5*.3) = a and you found the multiple of a.

Can you use that to tell you the true value of a?

I might have read the value wrong and assumed it crossed the 5. However, it does cross the 1 without a doubt, so replace the 5's with 1's.

Last edited: Feb 6, 2008
3. Feb 13, 2009

tsd5060

i had this same exact problem on a take home test and I still dont understand it.

4. Feb 13, 2009

LowlyPion

What does the slope of the graph represent?

5. Feb 13, 2009

tsd5060

the slope of the force acceleration graph represents mass