HOMEWORK 1

It is the curtain. It is consist of 2 fixed pully which is place one on top and one at the bottom.It will have a string attached to the two pulley.
When one of the string is pulled down, the curtain will move. It helps the person to move over a short distance and use lesser effort to move the curtain(load).
Without it, we have to walk a long way...
:D

Homework 1

speaking of my house, i knew nearly everything in every litttle corner of my house... let's start from my kitchen! oh ya, there is the clothes hanger it consist of pulley but not sure (fixed pulley,movable puley or the pully system) i think is fixed pulley?ok! it has the duty of hanging my clothes, whithout it that will be my end of life! i think...=) now walking towards my 100 more years old fans(at least should have 10 years old!!) i think the blade is the axle? and the hub is the wheel.is this the end of my house? of course not! the next place we are visiting is my bedroom! there is the curtain which is also made up of pulley!i use it everyday when the intensity of light increase everyday! it is the end of the 1 day tour around my house hehe=) byes please pardon me if i write any wrong facts or offended someone =)

Homework1

The simple machine I've found in my house is the SCISSORS. It makes use of the simple machine principle called ''lever''.It is used to cut things, from paper to meat. The fulcrum is found in the middle, and the effort is placed on the handle of the scissors. The load is then placed in between the blades. When an effort is applied to the scissors with a load on it, the sharp blades of the scissors will ''squeeze'' the load, causing the load to split. The amount used to cut a load varies according to the SIZE of the load , STRENGTH of it and SHARPNESS of the blade. Of course, if you try to take a pair of scissors to cut a COCONUT, then you should not expect the coconut to even have a single scratch on it. Also, if you use a 10 year old saftey scissors, then you should not even expect to cut CARDBOARD!!! The main difference between a pair of saftey siccors and a pair of metal scissors is that the saftey scissors are generally more blunt, and could not cut most hard materials like cardboard, whereas the metal scissors could cut most things, like hard cardboard, which the saftey scissors could not.

HOMEWORK1

The simple machine I found was the FAN. You know,the one that helps us to save electricity and money by using it instead of the air-conditioner! By examining the blades and mechanism that makes them spin, i found out that the blades of the fan are actually connected to a central "hub"
where a simple machine which resembles a wheel and axle spins the "hub". Causing the blades to spin!

The main difference between a traditional wheel and axle and the Fan's wheel and axle is the facet that the traditional one uses good old fashioned muscle power while the Fan's one is spun by a electrical motor instead of some burly guy's arm!

( Could not paste picture as a virus wiped my hard drive blanker than a magnetised disc. I had reinstall everything! )