The inclined plane was the easiest of mechanisms to calculate mechanical advantage because all we had to do to figure out the mechanical advantage was divide the length by height. The 1st class lever was the hardest of the mechanisms to calculate because the fulcrum was not directly in the center of the lever so the output and input were not equal resulting a more difficult calculation. Our estimated input was was 75 grams and the estimated output was 19.5, we got this by using out measurements and equations. To make the machine more mechanically efficient we could change the angle of the inclined plane and change the position of the fulcrum.