Assignment 1

You are required to investigate the relationship between the length of pendulum and the

period of oscillations of the pendulum.

Your scientific investigation report should consist of :

(a) Aim of experiment

(b) Problem statement

(c) Hypothesis

(d) Variables : manipulated/responding and constant

(e) Apparatus and materials

(f) Diagram of experiment

(g) Procedure

(h) Data /Observersation result

(i) Data interpretation /Line graph

(j) Discussion

(k) Conclusion

During the experiment,manipulative skill and scientific attitude and noble values will be

observed and recorded.

Assesment : Planning of experiment, Carrying out of experiment , Collecting and recording of data,Interpreting data and making conclusion.

Aim

Problem statement

To study how the length of pendulum affects the period of oscillations

of the pendulum.

What can you infer about the relationship between the length of the

pendulum ant the period of oscillations of the pendulum.

Hypothesis The longer the pendulum is,the longer will be the period of

oscillations(time taken for one oscillation)//the slower the pendulum

swing.

Variables:-

1. Manipulated :

2. Responding :

3. Constant :

Length of pendulum

Time taken for one oscillation

Type of pendulum / Type of string

Apparatus and Materials

Procedure/Method

Retort stand,thread,metre ruler,stopwatch,pendulum bob and cork.

1. The apparatus was set up as shown in the above diagram.

2. The length of pendulum is adjusted to 100 cm with metre ruler.

3.The time taken for 20 oscillations is measured with stopwatch and

recorded in the table as below.Then calculate the time taken for 1

oscillation as in the table.

Name :

Class:

Topic : Scientific Investigation

Data/Result

Data Interpretation

Discussion

Conclusion

4. The experiment is repeated using pendulums of lengths 80cm,

60cm, 40 cm and 20 cm.

5. Draw a graph of the period of oscillations [ time taken for 1

oscillation]( y –axis) against the length of pendulum (x-axis) .

(a)Based on the graph that you have drawn ,what can you infer

about the relationship between the length of the pendulum and

the time taken for one oscillation?

…………………………………………………………………………..

…………………………………………………………………………

(b) Predict the time taken to make one oscillation by a pendulum of

length 120.0 cm.

……………………………………………………………………………….

(c). Is the hypothesis accepted?

..............................................................................................................

The longer the length of pendulum is the slower the pendulum swing.

Length of pendulum (cm) 20.0 40.0 60.0 80.0 100.0Time taken for 20 oscillation (seconds)Time taken for 1 oscillation (seconds)