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3 April, 22:15

Two rubber bands pulling on an object cause it to accelerate at 1.2 m/s^2 ... a. What will be the object's acceleration if it is pulled by four rubber bands?. b. What will be the acceleration of two of these objects glued together if they are pulled be two rubber bands?

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  1. 4 April, 01:24
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    Assume the rubber bands have no mass and are identical so they supply the same force to the object. Newton's Second Law of motion says F=ma where F is the net force acting on the object.

    a. What will be the object's acceleration if it is pulled by four rubberbands?

    F = ma

    a = F / m

    *when force is doubled

    a = 2F / m

    acceleration will be doubled.

    b. What will be the acceleration of two of these objects glued together if they are pulled be two rubber bands?

    F = ma

    a = F / m

    *when force is doubled

    a = F / 2m

    acceleration will be halved.
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