• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Simple pendulum lab. In this experiment, the length of the string will be altered to see the affect on the time period.

Extracts from this document...

Introduction

image00.png

Sagar Sood

IB Physics Yr.1 HL

Block E

Due: May 22, 09

Sagar Sood

IB Physics Yr. 1 HL

Block E

Due: May 22, 09

Introduction

A pendulum is a weight suspended from a pivot so it can swing freely. When a pendulum is displaced from its resting equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position. When released, the restoring force will cause it to oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, is called the period.

In this experiment, the length of the string will be altered to see the affect on the time period. With the collected and calculated values, the value of acceleration due to gravity will be determined as gravity plays a vital role in the motion of the pendulum (and the only force acting).

The bob has to travel more distance in the given time. As the length of the string is being changed, it is the independent variable.

...read more.

Middle

11.90

11.72

11.84 ± 0.09

0.235

10.59

10.43

10.56

10.53 ± 0.08

0.165

9.19

9.12

9.15

9.15 ± 0.03

0.125

8.41

8.09

7.97

8.16 ± 0.22

± 0.001m

±0.01s

±0.1s

The table below shows the values of the calculated data that includes the time period (time for one oscillation) which further gives us the acceleration due to gravity.

Average Time

(s)

Time Period

(s)

Acceleration due to Gravity (ms-2)

15.18

1.52

9.14 ± 1

14.68

1.47

9.17 ± 1

14.08

1.41

8.64 ± 1

12.53

1.25

9.22 ± 1

11.84

1.18

8.99 ± 2

10.53

1.05

8.42 ± 2

9.15

0.92

7.70 ± 1

8.16

0.82

7.34 ± 2

±0.1s

±0.1s

± 1ms-2

Data Processing

Average Time (s) = Trial 1 + Trial 2 + Trial 3

                                     3

                          = 15.12 + 15.24 + 15.19

                                    3

                       = 15.18 s

...read more.

Conclusion

Self Improvement

In order to avoid the above errors/flaws, a number of precaution steps can be taken. Firstly, the string should never be rounded to the top. After each data point, the string should be removed, measured to the required length using a meter stick and then cut using scissors. This avoids a big error in the experiment. Secondly, it is very important that the stand remains stationary. To do so, extra weight should be put on the bottom but it is also important that this weight is not touching any part of the pendulum.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Physics essays

  1. Aim: To investigate the factors that affect the period of oscillation of a simple ...

    In these experiments, the dependent variable will always be the time for one full swing, or the period. The three tested independent variables will be the mass, the angle, and the length of string. The controlled variables will be the attachment point of the string, the string itself, the method used to time the pendulum.

  2. Determining acceleration of free fall by of a simple pendulum.

    % as shown below, the value being positive means it was higher than the actual value of acceleration of free fall of 9.81 ms-; this gives an accuracy of 96.2% as shown below Percentage discrepancy = 10.21 - 9.81 x 100 = 4.01 % 9.81 95.99 = 4.01 - 100

  1. Investigate the factors affecting the period of a double string pendulum

    Then using the formula 1/T where T represents the period in seconds I will be able to obtain the frequency and establish its relationship with the distance l. These two variables are both dependent from the As I am investigating only one variable that can affect the frequency and period

  2. Pendulum lab. The main purpose for this experiment is to find the factor that ...

    Count 3, 2, 1, 0 so that it is more accurate to start the stopwatch and the oscillation at the same time. 6. After ten oscillations, stop the stopwatch and record data. 7. Repeat step 4 through 6. 8.

  1. The Affect of Mass on the Time It Takes an Object To Fall

    mass increases the average time it takes an object to fall decreases. The fact that mass and time have an inverse relationship makes perfect sense because as the mass of an object increases so does the downward force of gravity on that object causing the object's acceleration to increase, which decreases the time it takes that object to fall.

  2. Lab Report - obtain the frequency of the simple pendulum and to analyze the ...

    .01 44.09 � .01 44.12 � .02 2.206 � .001 23 � .05 44.18 � .01 44.19 � .01 44.18 � .02 2.209 � .001 32 � .05 44.25 � .01 44.28 � .01 44.26 � .02 2.213 � .001 Table 5- Data processing of amplitude vs.

  1. Analyzing Uniform Circular Motion

    This is a relatively high error (neglecting uncertainties). The error can be due to the fact that the length of the string was not always the radius of the circular motion; if not enough force was exerted the string will make a Pythagorean relationship, with horizontal and vertical components, where the horizontal component is the actual radius of the circle.

  2. Investigating the Oscillations of an Obstructed Pendulum

    30.11 1.50 5 0.60 28.98 29.06 28.99 29.01 1.45 6 0.65 28.36 28.39 28.41 28.39 1.42 7 0.70 27.41 27.88 27.42 27.57 1.38 Calculating Uncertainties To calculate the time period of 1 oscillation of the pendulum, one must first know the uncertainty of each measuring instrument used.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work