Acceleration of 2 Rubber Bands on an Object

[gbedenba]

Homework Statement

Two rubber bands pulling on an object cause it to accelerate at 1.6 m/s2

(a) What will be the object's acceleration if it is pulled by six rubber bands? Answer: 4.8 m/s/s (correct)
(b) What will be the acceleration of seven of these objects glued together if they are pulled by two rubber bands?

Homework Equations

The Attempt at a Solution

got 4.8 m/s/s for A...that is right...don't know how to get b

 

[kuruman]

Two rubber bands, one object, a = 1.6 m/s².

Two rubber bands, seven objects, a = ?

When the mass is seven times as big and the force is the same, the acceleration will be ...? Think Newton's Second Law.