PALI SOLID FROM HONG KONG GROUP

FLUID MECHANICS

PROJECT

NUR AKMAL BIN ARJUNAAD100042

MOHAMAD FADZELEE B ZAINALAD100050

MOHD SYAHIR B KAMARUZZAMANAD100008

MOHD FIRDAUS B ZAHARUDDINAD100092

MOHD ALIF AIZUDDIN B AWANGAD100086

THE TEAM MEMBERS

 

Archimedes principle stated that an object that is

immersed in a fluid is buoyed up by a force equal to the

weight of the fluid displaced by the object. The weight

of the displaced fluid canbe found mathematically. The

fluid displaced has a weight W = mg. The mass can

now beexpressed in terms of the density and its volume,

m = pV. Hence, W = pVg.   

INTRODUCTION

Buoyancy is an upward acting force exerted

by a fluid that opposes an object's weight. If

theobject is either less dense than the fluid

or is shaped appropriately (as in a boat), the

force cankeep the object afloat. In a situation

of fluid statics, the net upward buoyancy

force (Fb) isequal to the magnitude of the

weight of fluid displaced by the body. This is

the force thatenables the object to float.

The main objective of this project is to design and provide a shoe of lightweight, buoyant material which is adapted to be worn on the foot to permit the wearer to walk through water. The shoe can be made in different sizes as long as it is able to accommodate 80 kg of weight when walking on water. Hence, we are to calculate the buoyant force which is equal to the weight of the fluid displaced by the object, in order to allow the shoe to float on water successfully.

 

 

OBJECTIVE

There were several advantages and disadvantages of our concept design buoyancy shoe. One of the advantages is we have added some stabilizer as a tool to stabilise our product. The cost for our concept product would be cheap as we only used Polyurethane and Silica-aerogel as our main materials. Silica-aerogel has a density of 1 kg/m3. It is very light. Our product would be long lasting as the materials could withstand corrosion. As for the advantages, our material of our product which was Polyurethane was porous and cannot be soaked in water for too long.

W man + W shoes = F B

m man(g) + m shoes = ρ water g V

80(9.81) + [16(9.81) + 2(0.02) (9.81)] = 1000(9.81) V 942.15 = 9810 V

V = 0.096 m3

FB = ρ g V

= 1000(9.81) (0.096) = 941.76 NFor a shoes, V = 0.096 ÷ 2 V = 0.048 m3

CALCULATION

Since, we must design the shoes that have a larger volume than the volume of the water displaced, V design > V water displaced

Thus, V shoes = length × height × width

V shoes = V balsa wood + V halt

= ¾ (0.95 × 0.25 × 0.25) + 2(0.5) (0.08) (0.08)

= 0.05 m3

In the case, the materials used are balsa wood and halt, ρ balsawood = 160 kg / m3 , ρ air = 1.23 kg / m3

W shoes = (ρ balsawood g + ρ air g) V

= [(160) (9.81) + (1.23) (9.81)] 0.05 = 79.08 NW = mg79.08 = m (9.81) m = 8.04 kg M balsa wood each = 8 kg , M halt= 0.01

kg 

OUR GREAT BUOYANCY SHOES (AQUA GTR X1-oA)

3 Dimension

Front View

Side View

From our project, we have learn how to use the Archimedes Principle. We can apply it to real life and understand the concept of buoyancy force which is very important in order to design a product. Engineer always put effort in attempt to produce a new design in order to fulfill human request nowadays. This project had give us the chance to learn how to design a buoyancy shoes based on the Archimedes Principle. We refer to the objective of this project and we think it is successfully done.

CONCLUSION