# kertas dua(versiguru)

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• 8/9/2019 Kertas Dua(Versiguru)

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KERTAS DUA

Kertas dua mengandungi 3 bahagian iaitu A, B dan C. Bahagian A adalah soalan struktur dan bahagian B dan

A. SO

AL

A

N

BAHAGAN B.!Choose onl" oneNo.# or No.\$% & '% (arks)

Konstruk yang diuji dalam bahagian B adalah seperti di bawah:

1. KNOWLEDGE ( 1 Mark)

1. Menyatakan definasi denan ayat !en"#

\$. Men"%is for&"%a denan si&'o% dan &enyatakan &aks"d setia! si&'o%.

Contoh Soalan

i) *hat is meant b" s+ring onstant-

Contoh Jawapan:

Force perunit of extension of the spring//

k F/x! where kspring constant! F force! x extension of the spring

LATAN *KNOWLEDGE+

\$. *hat is meant b" elastiit"-

"pakah yang dimaksudkan dengan kekenyalan# \$% mark&

Contoh Jawapan:

'lasticity is the property of a substance which enables it to return to original shape ( si)e ( length

after an applied external force * compressi+e force or stretching force, is remo+ed-

'. *hat is meant b" eletromagnet-

"pakah yang dimaksudkan dengan elektromagnet# \$% mark&

Contoh Jawapan:

'lectromagnet is a de+ice in which magnetism is produced by an electric current // temporary magnet

made by winding a coil round a soft iron core and magnetic field produce when current flow

3. *hat is meant b" reration-"pakah yang dimaksudkan dengan pembiasan# \$% mark&

" phenomenon when light tra+el in different medium with different densities . change in speed and

direction // the bending of light when tra+elling through different medium

,UESTON NO. ELEMENT-ONSTRUT MARKS

/

10

KNOWLEDGE ( !eneta#"an)

ONETUALSE (&enkonse!si)

UNDERSTANDNG (kefa#a&an)

RO2LEM SOL3NG (!enye%esaian &asa%a#

4"a%itati5e)

1

6

7

10

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/. *hat is meant b" thermal equilibrium-

"pakah yang dimaksudkan dengan keseimbangan terma# \$% mark&

hermal e0uilibrium states that the net rate of heat flow from one medium to another medium and +ice

+ersa is )ero// temperature for both medium is the same-

0. State one ator that aet the +ressure in li1uid.

1yatakan satu faktor yang mempengaruhi tekanan dalam cecair- \$% mark&

\$. MENKONSES ( 6 Marks)

1. Me&'"at 8 &enyatakan !e&er#atian 9 Ke&a#iran Me&er#ati 8 2erfikir se:ara Kritis.

\$. Me&'"at !er'andinan iait" &enyatakan !ersa&aan ata" !er'e;aan

?"ster" !er%" 'eri isi sek"[email protected]"rannya 6 isi.

6. aBa!an dit"%is da%a& 'ent"k C!oint for&

onto# Soa%an

!a) 2iagram #.\$ and 2iagram #.' sho to s+rings ( and N. Both s+rings are o the same material and

same ire thikness but ha4e dierent spring constant.

5sing 2iagram #.\$ and 2iagram #.', om+are the mass loaded b" the s+ring, the diameter o the

s+ring and the e6tension o the s+ring.7elate the diameter o the s+ring and the e6tension o the s+ring

ith the s+ring onstant.

80 marks9

Contoh Jawapan:: mass in diagram 2-% is e0ual to the mass in diagram 2-3

: diameter of the spring in diagram 2-% is smaller compare to the diagram 2-3

: extension of the spring in diagram 2-% is shorter compare to the diagram 2-3

: the bigger the diameter of the spring the longer the extension of the spring

: the bigger the diameter of the spring the lower the +alue of spring constant

: the higher the +alue of spring constant the shorter the extension of the spring

DIAGRAM 9.1 DIAGRAM 9.2

4ensity/depth/acceleration due to gra+ity

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LATAN *ONETUALSE+

\$.

2iagram \$%.\$ 2iagram \$%.'

!i) 5sing 2iagram \$%.\$ and 2iagram \$%.' om+are the urrent lo, the amount o iron

iling and the magneti ield strength o the to eletrodes. 7elate the urrent lo and amount

o iron iling attrated b" the eletromagnet and the magneti ield strength.

5enggunakan 6ajah %7-% dan 6ajah %7-3 bandingkan pengaliran arus! kuantiti serbuk besi dan

kekuatan medan magnet kedua8dua elektrod- 9ubungkait pengaliran arus dengan kuantiti serbuk

besi yang tertarik kepada elektromagnet dan kekuatan medan magnet-

8 marks 9Contoh Jawapan:

- Current flow in diagram %7-3 is more than %7-% // +ice +ersa-- he amount of iron filing attracted by iron core in 4iagram %7-3 is more than %7-% // ++-- he magnetic strength in diagram %7-3 is more than %7-% // +ice +ersa-- "mount of iron filing attracted increase when current increase- he magnetic field strength increase when current increase

'.

2iagram #.\$ 2iagram #.'

Based on 2iagram #.\$ and 2iagram #.', om+are the rerati4e inde6, the rerated angle and the densit"

beteen medium A and medium B.

7elate the rerati4e inde6 ith the rerated angle and the rerati4e inde6 ith the ratio o sin o

inident angle, i to the sin o the rerated angle, r to dedue a +h"sis la that is in4ol4ed.

Berdasarkan 6ajah 2-% dan 6ajah 2-3! bandingkan indeks biasan! sudut biasan dan ketumpatan medium

" dan medium B- 9ubungkaitkan indeks biasan dengan sudut biasan dan indeks biasan dengan nisbah

sinus sudut tuju!i kepada sinus sudut biasan!r bagi menghasilkan hukum fi)ik yang terlibat-

8marks9

- he refracti+e index of " ; the refracti+e index of B

n = 1.2 n = 1.8

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- he refracted angle of medium " < refracted angle of medium B- he density of medium " ; density of medium B- he greater the refracti+e index the smaller the angle of refraction- he greater the refracti+e index the greater the ratio of sin i to sin r

o we will not feel hurt-

'. E6+lain ho the generator orks to +rodue alternating urrent.

erangkan bagaimana penjana berfungsi untuk menghasilkan arus ulang alik- 8 = marks 9

: the strong wind abo+e the roof is mo+ing +ery fast-

: ?hile the air in the house is at rest-

: "ccording [email protected] principle the higher the +elocity the lower the pressure-

: >o! the pressure abo+e the roof is smaller than pressure inside the house-

: " force is generated by the difference in pressure which is strong enough to lift the roof

3. E6+lain h" the roo o a house being lited b" strong inds.

erangkan mengapa bumbung sebuah rumah terangkat oleh angin yang kencang*ribut,- 8 = marks9

: ?hen the coil rotates the coil cut across the magnetic field lines

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: Anduced current flow in the coil-

: he current maximum when the coil cut the magnetic field at right angle // current decreased

*become )ero, when the coil mo+e in parallel with magnetic field lines

: he direction of current flow determine by using Flemings right hand rule

: "fter 27o the direction of current in the external circuit re+ersed/

7. RO2LEM SOL3NG (4"a%itati5e) 9 10 Marks

\$. Menena%!asti Masa%a#

'. Menana%isis Masa%a# 9 Ke&a#iran M-ana%isis

3. Men:ari kaeda# !enye%esaian &asa%a#

0. Men"%is ?aBa!an da%a& 'ent"k ?ad"a% (se!erti di 'aBa#)

: densit" o motor"le +arts

: engine +oer

: s+ring in sus+ension s"stem

: si?e o t"re

8 @ marks9

Contoh Jawapan

*i, . to absob the shock to make the rider feel more comfotable

to reduce +ibration

spring in suspension

system

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*ii,

LATAN * RO2LEM SOL3NG (,"a%itati5e)+

1.

ou are re1uired to gi4e some suggestions to design a hang glider or rereation. 5sing an a++ro+riate

+h"sis one+t on motion, ores and the +ro+erties o materials, e6+lain "our suggestions based on the olloing

as+ets

"nda dikehendaki member cadangan untuk mereka bentuk glider untuk tujuan rekreasi- 5enggunakan konsep

fi)ik yang sesuai! cadang dan terangkan pengubahsuaian atau cara yang boleh dilakukan untuk meningkatkan

keberkesanannya berdasarkan kepada aspek8aspek berikut :

Si?e o the sail.

>ai) layer digunakan-

Su++orting able.

Kabel penyokong-

(aterial use or the sail.

Bahan yang digunakan untuk layer-

Assembl" and trans+ortation.emasangan dan pengangkutan-

(aterials use or struture like masterrame and sael" bar.

Bahan untuk struktur seperti rangka utama den @safety bar! 8\$% marks9

Contoh Jawapan

ASPECT EXPLANATION

Bigger si)e of sailroduce bigger different in pressure

'asy to cut air resistance

not easily breakincrease strength and rigidity

Dow densityDighter

Deast upward lift is needed

?aterproof 1ot absorb

Aspect Explanation

Dow density of motorcycle part Dighter

9igh engine power 8o produce high ecceleration

89igh resultant force

9igh spring constant 8he spring more stiffer

8Dess +ibration

?ide tyre 8increase stability

8 reduce pressure

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water

9inged structureElider can easily assemble and folded

up for transportation-

>tructure from rigid

aluminum tube-

Dighter

Deast upward lift is needed

\$.A ar needs an eiient h"drauli brake s"stem or saet" +ur+oses. Suggest and e6+lain ho to build a

h"drauli brake s"stem hih an untion eeti4el", based on the olloing as+et

>ebuah kereta memerlukan sistem brek hidrolik yang cekap bagi memastikan keselamatan di tahap yang