Bevan Koo 1st day reflection

I had learnt that we must not waste water and use it wisely as there are more than 1.1 billion people in the World that has no access to clean water. Proper sanitation is also very important in daily lives. Micrology of electronics helps to improve lives of all as It helps to save time, space and effort. It also brings convenience to all even the blind.

Nanotechnology help to save time, space and effort. It brings convenience to everyone and help to save life even from bullet and even terrorism.

Animation requires a lot of hard work, creativity and labour. In recent years, stop motion, 2d and 3d animations bring in different varieties of fascinating animations.

Sea level rise would not be the same for all places and it is hard to measure the melting of glaciers.

The plenary session that leaves the deepest impression on me is Biomedical Engineering and Technology. What I like about it is that it can save life as it can help to protect oneself from enemies as it help to camouflage and protect from bullets.

Reflection for day 1 ( Brendon Goh )

Reflection for day 1:

Plenary Sessions:

Importance of water - dirty and clean

We must save water and appreciate it and not take it for granted as there are people in the world who do not have access to clean drinking water and fall sick very easily.

Revolution of Microelectronics Technology

Electronics can be integrated to form better technology like bionano electronics.

Biomedical engineering and technology

Reducing size for a fixed volume to get a larger surface area to have more energy.

IT for Animation

Animation is a painstaking process that needs lots of labour to create frames and animate them.

Disappearing glaciers, rising sea levels, gravity being important

When a glacier melts, the land will pop up, so the sea level near the glacier will decrease while the sea level far away from the glacier will rise.


Deepest impression:

The plenary session that gives me the deepest impression is the one about glaciers, and rising sea levels. This is a problem as it concerns the environment. If the glaciers keep melting, the sea level far away will keep on rising, and tide will rise and causing some islands to be submerged. This will be a major problem for people in the future.

By:

Brendon Goh

Fastest Ball Challenge(Pre-reading)(Bevan)

In this challenge, we will be tasked to perform a simple experiment involving the rolling of a metal ball bearing down an inclined plane and measuring the time it takes to travel the horizontal track.
A vector quantity is completely specified by a magnitude with appropriate units and has a direction. The convention for vectors in this manual is bold face, with an arrow on top of the
quantity and its magnitude is under the arrow.

Some useful properties of vectors include vector addition, and subtraction. In vector addition of two vectors, we write the resultant as A+B=R, C=A+(-B).

We first define what energy and work are. Energy is usually defined to be the ability a physical system can do work on other systems. Work is defined to be the amount of energy transferred to another system by a force acting through a distance.

Gravitational Potential Energy= MGH (M=Mass G=Gravity H=Height)
Kinetic energy= 0.5MV^2 (M=Mass V=Speed)
MGH=0.5MV^2
V=Square Root(2gH)

Apparatus - Inclined track with adjustable slope, horizontal track with skirting, photogates & the Smart Timer.
Take measurements of at least 15 angles between 10o and 50o. Determine the angle for the minimum time of travel.
Repeat the experiment using the photogates with a track and a ball bearing that is covered with oil. Determine the angle of inclination for the minimum time of travel across the horizontal track. The team with an angle of inclination that gives the shortest travel time in both challenges wins!

Pre - Research ( Brendon Goh )

This project is about making a ball roll down a ramp and across a horizontal track as fast as possible. This experiment is more about physics, energy and conversion of energy.

Energy is defined as the ability to do work.

There are 2 main types of energy in this experiment, gravitational potential energy and kinetic energy. Energy is measured in the unit of Joule ( J )

Gravitational potential energy: The formula is mgh, where m is mass in kg, g is gravitational field strength, about 10 N/kg on earth, and h is height in meters.

It depends on the height and mass, so changing the height and mass will cause different gravitational potential energy.

Kinetic energy: Anything that is moving has kinetic energy.

The formula is 1/2mv^2 or I other words (0.5m)(vv) or also (m/2)(vv).

M is the mass in kg and v is the speed in m/s.

It depends on the mass and speed, so changing the mass or speed will change the kinetic energy.

Work done: The unit for work done is also joule ( J )

the formula for work done is: FD, f is the force applied in newtons and d is the distance moved parallel to the direction of force in meters.

So to calculate, the energy needs to be converted from gravitational potential energy to kinetic energy as it rolls down the ramp, and through out the entire experiment from rolling down the ramp and the horizontal track, it will lose energy as sound or heat.

The principle of conversion of energy states that energy cannot be created or destroyed, but transferred from one form to another. So the gravitational potential energy will convert to kinetic energy as it rolls down the ramp,but at the same time, some coverts to unwanted heat or sound energy. Once at the horizontal track, the kinetic energy will also convert to other forms like heat or sound thus loosing kinetic energy and eventually making it stop.

By: Brendon Goh

Team Members

Here are our members for our group:

Koh Su En S2 - 02

Carisa Chan S2 - 02

Bevan Koo S2 - 06

Brendon Goh S2 - 06

Thank You