By: Hallie Boatright, Josh Seiden, Lauren Fitzmeyer, and Henry Menozzi

*Fridge Solution

*Before the Change

*Starting to Move

Fn= 22N

Fg= 22N

Fa= 8NFf= 7.5N

These Forces are unbalanced because the Fnet is greater than 0 and it is accelerating because it is moving and a non-constant speed.

Fnet= .5NW

*Constant Speed

Fn= 22N

Ff= 4.5N

Fa= 4.5N

Fg= 22N

The brick is balanced because the Fnet is 0 and it is not accelerating because it is moving at a constant speed.

Fnet= 0

*Modification

*Our modification is a series of colored pencils, spaced out just enough so the frictionless platform that rolls over the pencils can get over without any stopping or falling over.

*We eliminated the friction between the floor and the fridge by using pencils that roll easily.

*After the Change

*Starting to Move

Fn= 22N

Fg= 22N

Fa= 1N

Ff= .5N

These forces are unbalanced because the Fnet is greater than 0 and they are accelerating because the brick was just overcoming the static friction.

Fnet= .5NW

*Constant Speed

Fg= 22N

Fn= 22N

Fa= .5NFf= .5N

The forces are balanced because the Fnet is 0 and it is not accelerating because it is at a constant speed and the forces are balanced.

Fnet= 0

*Was Our Modification Successful?

*Yes, our modification was successful. We made our Fa go from 4.5N to about .1N.

*The fridge rolled over 1 meter of colored pencils with ease.

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