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

physics lab report

Extracts from this document...

Introduction

Aim

to determine the acceleration of free fall in the Friends Boys school in El-Bireh using photogates.

Data Collection

Table(1): showing the time needed for the sphere to fall from given heights.

Trial

Height  h/cm

 (±0.5cm)

Time t/ms

 (±0.5ms)

1

10.0

155

2

20.0

212

3

30.0

256

4

40.0

293

5

50.0

326

6

60.0

353

7

70.0

385

8

80.0

411

9

90.0

434

Data Processing and Presentation

Conversion factors

1 millisecond = 10ˉ³ second

1 centimetre = 10ˉ² metre

Table (2): showing the time and the time² needed

...read more.

Middle

0.600

0.353

0.124

7

0.700

0.385

0.147

8

0.800

0.411

0.169

9

0.900

0.434

0.188

Nadeem Rabaia

1.        Absolute error in time²

Absolute error in time²( ∆t²) = (absolute error in time (∆t)  + absolute error in time (∆t)) * time²(t2)

                                                                       time(t)                                      time(t)

∆t² = ( ∆t + ∆t)*t²

             t                                                        

 ∆t² = (  2∆t)*t²

           t

∆t² =  2(0.0005) (0.0655) = 0.0003s

0.256

2.         Acceleration of free fall

d=h= ut + ½at²

a=g = acceleration of free fall (constant)

Variables:

d=h=the distance between the upper photogate and the lower photogate

u=initial velocity of the sphere (we assume it is equal to 0ms-1)

t=the time taken for the sphere to fall from the height

Figure 1: the apparatus used in the experiment.

h= (0)t + ½(g)t²

h= ½gt2

Slope(m) of the graph of h vs. t2 = ½(g) =∆y  = y2-y1  = 0.800-0.500 =  4.76ms-2

                                              ∆x             x2-x1       0.169-0.106

                            g= 9.52ms-2

graph is on graph paper.

3.

...read more.

Conclusion

Improvements

  1. Using apparatus that will start timing when object is dropped and will stop timing when the object strikes a sensor below or passes a photogate. This might give more accurate results as the initial velocity of the sphere would 0msˉ¹.
  1. Using a more accurate time measuring device and more accurate distance measuring equipment.
  1. Making sure that the metre is viewed at right angles to overcome parallax error.
  1. Conducting the experiment in a vacuum box to reduce the effects of air resistance on the metal sphere.

...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. Angle Acceleration

    By calculating the velocity of the cart somewhere near the very start of the trial, and then calculating the velocity at the very end of the trial, acceleration can be obtained. Once the 2 speeds have been obtained, the near-start velocity must be subtracted from the near-end velocity.

  2. In this extended essay, I will be investigating projectile motion via studying the movement ...

    Also, the range of the metal ball should be directly proportional to the compressed spring length. Thus, by doubling the compressed spring length, it would as double of the range of metal ball. Let's determine whether the hypothesis above applies to the experimental data.

  1. This lab will test the effects of the surface area factor on acceleration due ...

    Evaluation of Experimental Procedure Since the materials used for this experiment was limited, my partner and I decided to make use of the large school supplies we had, lined paper to use for this experiment. There is nothing wrong with the lined paper, but there are three holes at the

  2. IB Physics Lab - Resistance

    Then we made 5 different series circuits with different combinations of resistors. 3. Then we calculated the theoretical resistance of each of them and measured the actual resistance using the multimeter. 4. Then we repeated steps 2 and 3 but with parallel circuits.

  1. Simple Harmonic Motion Physics HL Lab Report

    of the simple pendulum * a protractor to measure the angular amplitude for the various pendulum lengths * a vernier caliper to measure the radius of the bob and the length of the hook Method: * The apparatus was arranged as described and shown in the figure * The radius

  2. Investigate the Size of Craters in Sand Due to Dropped Object.

    We also predicted that the volume of craters will also increase as the depth of craters increase. Apart from that, because we used slotted mass as our dropped object, it indicates that we will have constant diameter of the craters.

  1. HL Physics Revision Notes

    During a phase change, the thermal energy gained or lost will go towards increasing or decreasing the potential energy of the particles to either overcome or succumb to the inter-molecular force that pulls particles together. In the process, the average kinetic energy will not change.

  2. Investigation into the relationship between acceleration and the angle of free fall downhill

    made, which include: * Angle of inclination when the cart goes downhill * Average Velocity of the cart, therefore acceleration of the cart too To calculate the angle of the slope trigonometric functions were used, specifically the sine identity. The following formula was used Therefore the angle is determined by

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