walking on water group

8/7/2019 walking on water group

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Walking on the water

MUHAMMAD FATAH BIN CHE YUSOF CD080070

MOHAMMAD ADAM B. JAMIAN DD080088



Walking on the water



CORROSION

I ntroduction � Based on the archimedes principles,when a

stationary body is completely submerged in a fluid, or floating so that it is only partially submerged, theresultant fluid force acting on the body is called thebuoyant force. where is the specific weight of the fluidand is the volume of the body. The direction of thebuoyant force, which is the force of the fluid on thebody, is opposite to that shown on the free-bodydiagram. Therefore, the buoyant force has a magnitudeequal to the weight

� A body is said to be in a stable equilibrium position if,when displaced, it returns to its equilibrium position.Conversely, it is in an unstable equilibrium position if,when displaced (even slightly), it moves to a newequilibrium position. Stability considerations are

particularly important for submerged or floating bodiessince the centers of buoyancy and gravity do notnecessarily coincide. A small rotation can result ineither a restoring or overturning couple. For floatingbodies the stability problem is more complicated, sinceas the body rotates the location of the center of buoyancy (which passes through the centroid of thedisplaced volume) may change.



CORROSION

D esign C oncept � The shoes will float on the water. Balsa wood is

one of the lightest varieties of wood available.

The density of this wood is 110-140 kg/m3.

� Design of the shoes. The design concept need to

to comfortable, easy to handle, in a stable

condition, compact size and low cost� Same as its project name this project will only

considered the design that will act as a shoes not

any product that will float only on water.

� This study or shoes design only suitable for calm

water surface. Which means it will only work bestat the lake or pond without hugh wave such as on

the sea.



CORROSION

C alculation There are some assumption will be made to checkeither the shoes will be floating or not. The assumption

that will be made is about its dimension by make its

shape into simple shape.

Feet area volume,

V1 = 0.13 x 0.085 x 0.141

= 0.00156 m3

V2 = 0.11 x 0.070 x 0.141

= 0.00109 m3

Feet area volume, Vf = V1 + V2 = 0.00156 + 0.00109

= 0.00265 m3

Shoes area volume,

V3 = 0.017 x 0.14 x 0.3

= 0.00714 m3



CORROSION

C alculation V4= 1/2 x 0.09 x 0.14 x 0.3

= 0.00189 m3

V5 = 0.2 x 0.15 x 0.3

= 0.00900 m3

V6= 0.26 x 0.024 x 0.3

= 0.00187 m3

V7 = 1/2 x 0.076 x 0.26 x 0.3= 0.00296 m3

Shoes area volume, Vs = V3 + V4 + V5 +V6 + V7

= 0.00714 + 0.00189 + 0.009 + 0.00187 + 0.00296

= 0.02987 m3

Total volume, = Vs - Vf = 0.02987 - 0.00265

= 0.02722 m3



CORROSION

C alculation Block weight = Volume x density x gravity acceleration

= 0.02722 x 130 kg/m3 × 9.81 m/s2 + 40 x 9.81

= 427.1137

(40 x 9.81 because human weigth considered is 80 kg and

there are two shoes so it will became 40 kg for each shoes)

Displacement water volume = block weight / water specific mass

= 427.1137 / (1000 x 9.81)

= 0.04354

Submerged length = Displacement water volume / (length x width)

= 0.04354 / (0.6 x 0.3)

= 0.24m

So the shoes design will be float.



S ketching



3 D D rawing



D iscussion

� From the shoes design and concept and calculationwe can get that the shoes will be floating only when

the human weight is 80 kg or less. So another

dimension of shoes need to be made to make sure

that the shoes can be used by other people.

� We are also need to analyze more spesifically thehull design so that the hull will help to balancing the

shoes but will not hold the user movement because

of the water pressure at the front of the hull.



C onclusion

� As a conclusion this project had been conductsuccesfully. Theoretically this design will help its

user to standing on the water. This design will also

help its user to stabilize on the water when there

are moving forward. This design product only

suitable for user with weight 80 kg or lower.

Although we are not being able to produce thisproduct but we are confident that this product will

give good result if produced.



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walking on water group