spmy fizik k3 t4

8/4/2019 Spmy Fizik k3 t4

1/6

PEPERIKSAAN PERTENGAHAN TAHUN 2011

SKEMA PEMARKAHAN KERTAS 3 FIZIK TINGKATAN 4

1 (a)(i)

(ii)

(iii)

(b)(i)

(ii)

(c)

(d)

Number of coins, n

Thickness of the coins, T

Type of coin

0.01mm

2m for all correct value of t

1m for all correct value of t

2m for all correct value of T

tabulate the result correctly

n t/mm T/mm

1 2.93 2.92

2 5.86 5.86

3 8.79 8.78

4 11.72 11.71

5 14.65 14.64

T is directly propotional to n

Total

1m

1m

1m

1m

2m

2m

2m

5m

1m

16 m


2/6

2 (a)

(b)

(c) (i)

(ii)

(iii)

(d)

7 N

a increased

Shows on the graph appropriate right triangle ( > 5 x 4)

Gradient , m = 35 10

9 1

= 3.125 N m-1s2 // 3.125 kg

*with correct unit

Marked on the graph

a = 5.5 ms-2 6.0 ms-2

Fincreases linearly with a

1. Make sure elastic strings are stretched at constant length//

2. The position of the eye perpendicular to the scale of the

metre rule when measuring the ticker tape to avoid errors

due to parallax/systematic error

Total

2m

1m

1m

1m

2m

1m

1m

1m

1m

1m

12m

3 (a)

(b)

(c)(i)

(ii)

(iii)

The inertia depends on the mass

As the mass increases as the inertia increases

To investigate the relationship between the mass and the

inertia

Manipulated variable: the mass

Responding variable: the inertia

Fixed variable: number of oscillation , the length of the jigsaw

blade.

Jigsaw blade , plasticine , G-clamp , stop watch , balance.

1m

1m

1m

1m

1m

1m


3/6

(iv)

(v)

(vi)

(vii)

The mass of the plasticine is measured by a balance,m= 20.0g

The jigsaw blade is clamped at one end and a plasticine ball is

fixed at the other

The jigsaw blade is displaced horizontally to one side and then

released so that it oscillates.

The time for 10 oscillations ,t is taken by a stop watch.

The experiment is repeated 5 times by using plasticine balls

with different masses 30.0g, 40.0g, 50.0g and 60.0g.

Mass/g Time/t

20.0

30.0

40.0

50.0

60.0

Plot the graph time, t against mass, m

Total

1m

1m

1m

1m

1m

1m

12m

4 (a) Making the right inference


4/6

(b)

(c)(i)

(ii)

(iii)

(iv)

(v)

The height of the track(hillock) affects the velocity

Building an appropriate hypothesis

The greater the height, the larger the velovity.

Stating the aim of the experiment

To study the relationship between the height and velocity

Stating the correct variables

Manipulated variable : height (of track), h // number of similar

wooden blocks

Responding variable : velocity, v

Fixed variable : length (of track), l//

Mass (of trolley) , m

List of appropriate apparatus and material

Metre-rule , a.c. power supply

Describing set up of the apparatus

Stating the procedure of the experiment

1. Set up apparatus as shown above.

2. Set the track so that the height of track, h = 20.0 cm.

3. Switch on the power supply and allow the trolley to come

down the track. Calculate the velocity, v (of the trolley) fromthe ticker-tape using formula v= d/ 0.20s

4. Repeat steps 2 and 3 for h = 25.0 cm, 30.0 cm, 35.0 cm and

1m

1m

1m

1m

1m

1m

1m

1m

1m

1m

a.c. power

su l

Ticker tapeTicker timerTrolley

track

d


5/6

(vi)

(vii)

40.0 cm.

5. Tabulate data.

6. Plot graph of v against h.

Tabulating data

Show table with h and v as headings

Height/cm v / ms-1

20.0

30.0

40.0

50.0

60.0

Analysing data

v

h

Total

1m

1m

12m

Tamat


6/6

spmy fizik k3 t4

Documents