Three+Strings

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=Three String Problems:= In order to make the Mousetrap Racer go the required distance, it is necessary to adjust the length of the string so that it gives the racer enough to go the distance, but not to much so it can stop accurately. The length of the string can be figured in 4 steps

1. Calculate the number of rotations the wheels must turn to reach the required distance:

Distance / (Π * Diameter of the wheel) = Required Rotations

2. Next, calculate the circumference of the axle

Π * Diameter of Axle = Axle Circumference

3. Multiply the rotations and the axle's circumference to get the length of the string required.

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