(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two rubber bands stretched to the standard length cause an object to accelerate at 2 m/s^2. Suppose another object with twice the mass is pulled by four rubber bands stretched to the standard length. The acceleration of this second object is: ??

The correct answer is 2m/s^2.

2. Relevant equations

F = ma

a = F/m

3. The attempt at a solution

a = F/m

Therefore, a is inversely proportional to m.

a1/a2 = m2/m1

Second mass is twice the first mass.

a1/a2 = 2m/m

m's cancel out, leaving:

a1/a2 =2

Isolate a2:

a2 = a1/2

That would make my acceleration of the second object 1 m/s^2, not 2 m/s^2. Did I miss something?

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# Homework Help: F=ma proportional reasoning

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