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Homework Statement
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.
Homework Equations
F = ma
a = F/m
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?