4531/1 NAMAFizikKertas 3SOLAF 2011 TINGKATAN

JABATAN PELAJARAN PERAK_________________________________

SOALAN LATIH TUBI BERFOKUS

SET 1

SIJIL PELAJARAN MALAYSIA 2011

FIZIK

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SULIT 4531/1

Section A

[ 28 marks]

Answer all question in this section.The time suggested to complete this section is 60 minutes.

1 A student carries out an experiment to find out the relationship between mass, m, and the oscillation period, T, of an inertia balance. A piece of jigsaw blade is clamped at one end and a plasticine ball with mass 10.0 g is fixed at the other end. The distance from the plasticine.

The jigsaw blade is displaced horizontally to one side and then released so that it oscillates. The time for 10 oscillations, t1, is taken using a stop watch. The jigsaw blade is oscillated again to obtain the time for 10 oscillations, t2, for the second time. The actual readings of t1

and t2 are shown in Figure 1.2.

The experiment is repeated by using plasticine balls with masses 20.0 g, 30.0 g, 40.0 g and 50.0 g. The readings of the stop watch are shown in Figure 1.3, 1.4, 1.5 and 1.6.

The period of oscillation, T, of the jigsaw blade is given by the following equation:

T =

Where tmean = t1 + t 2

2

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mean

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(a) For the experiment described on page 1, identify: (i) the manipulated variable.

……………………………………………………………………………………. [1 mark]

(ii) the responding variable.

……………………………………………………………………………………. [1 mark]

(iii) the constant variable

……………………………………………………………………………………. [1 mark]

(b) Base on Figure 1.2, 1.3, 1.4, 1.5 and 1.6, determine t1, t2, tmean , T and T2 when m is equal to 10.0 g, 20.0 g, 30.0 g, 40.0 g and 50.0 g.

Tabulate your results for t1, t2, tmean , T and T2 for each values of m in the space below.

[ 7 marks](c) On the graph paper, plot a graph of T2 against m.

[5 marks](d) Use your graph to state the relationship between T and m.

……………………………………………………………………………………. [1 mark]

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2 A student carried out an experiment to investigate the relationship between the temperature of liquid when heated and its the mass, m. The student used the same immersion heater to heat up different masses of the liquid in a constant time. The initial temperature, Ө0, of the liquid which is constant and the final temperature, Ө, of the liquid after heated are recorded.

The results of the experiment is shown in a graph of Ө against shown in Figure

2.1.

(a) The initial temperature, Ө0, of the liquid can be determined from the intercept of theof the Ө-axis.Show on the graph how you determine Ө0 and write the value below.

Ө0 =………………………… [2 marks]

(b) State the relationship between Ө and m.

……………………………………………………………………………………….. [1 marks]

(c) The specific heat capacity, c, of the liquid is given by the equation.

Where k is the gradient of the graph.

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0.1 0.2 0.3 0.4 0.5 0.6 0.726

27

28

29

30

31

32

33

34

0

Graph of Ө and 1/mӨ 0C

1/m /kg-1

Figure 2.1

4

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(d)

(e)

(i) Calculate the gradient of the graph Ө against

[3 marks](ii) Calculate the value of the specific heat capacity, c, of the liquid.

[2 marks]

Determine the mass, m, of the heated liquid when the final temperature, Ө, is 32 0C.Show on the graph how you determine the value of m.

m= …………………..

State one precaution that should be taken during this experiment.

………………………………………………………………………………………... [1 mark]

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Section B

[12 marks]

The suggested to answer this section is 15 minutes

Diagram 3.1 shows two wooden tops. One of the tops is partly coated with tin. Both tops are the same size and are rotate with the same velocity,

Diagram 3.2 shows the top which is partly coated with tin able to spin longer.

Based on the above information and observations.(a) State one suitable interference.

(b) Sate one suitable hypothesis.

(c) With the use of apparatus such as a backsaw blade, plasticine and other apparatus, describe an experiment framework to investigate the hypothesis stated in 3 (b). In your descriptions state clearly the following: (i) Aim of the experiment. (ii) Variables in the experiment. (iii) List of apparatus and materials. (iv) Arrangement of the apparatus. (v) The procedure of the experiment which include the method of controlling the manipulated variable and the method of measuring the responding variable.

(vi)The way you tabulate the data.(vii) The way you would analyse the data.

END OF QUESTION PAPER

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1. (a) (i) mass (ii) time for 20 oscillations / period (iii) length

Mass, m (g)Time for 20 oscillations, t (s) Taverage T = taverage /20 T2

t1 t2

10.0 4.0 4.2 4.1 0.41 0.1720.0 5.4 5.2 5.3 0.53 0.2930.0 6.8 7.0 6.9 0.69 0.4840.0 8.0 8.2 8.1 0.81 0.8650.0 8.8 9.0 8.9 0.89 0.79

(d) T2 is directly proportional to m.

(b) Ө directly proportional to m

(c)(i) k = 33.5 -27.3 / 0.60 -0

=10.30C

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10.0 20.0 30.0 40.0 50.0

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0

T2

m/g

Figure 2.1

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(ii) c = 4.5 x 10 4 / 10.3 = 4.4 x 103 Jkg-10C

(d) 1 / m = 0.455 when Ө = 32 0C

= 1 / 0.455

= 2 198 kg

(e) the liquid be stirred

3 Inference: The mass affected the motion of an object.Hypothesis: Mass increases period of oscillation (time for one oscillation) increases.Aim: To determine the relationship between mass and period of oscillation.Manipulated variable: MassResponding variable: Period (time for one oscillation)Fixed/constant variable: Length of the saw.Apparatus: Saw, plasticine, stop watch and G clamp and ruler.Apparatus arrangement:

Procedure1. The apparatus is set up as shown.2. 10 g plasticine is placed at the end of the saw. The plasticine is oscillated and time (t) for 20 oscillations is

measured and recorded. The period of the oscillation is calculated as shown below:

3. Step 2 is repeated by using 20 g, 30 g, 40 g and 50 g plasticine.

Tabulation:

Mass of plasticine, m (g) Time for 20 oscillations, t (s) Period, T (s)

10.020.030.040.050.0

Data analysis:

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Plasticine

Saw (gergaji)

G clamp

Mass, m (g)

Period, T (s)