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

    r �d = (22/7) x (1.9) � x 0.9 = 10.21 cm � 10.00 1.00 = ? r �d = (22/7) x (1.9) � x 1.0 = 11.34 cm � 12.00 1.10 = ? r �d = (22/7) x (1.9) � x 1.1 = 12.48 cm � * Fourth Reading Calculation Diameter of slotted mass =

  1. Simple Harmonic Motion Physics HL Lab Report

    0.95 cm � 0.1cm Pendulum Total length of the string = String length + length of hook + radius of

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

    Uncertainty for each =0.469...% and =0.365...% o Values multiplied and Percent Uncertainty added =145.91cm2 and 0.469%+0.365%=0.834% o Final Absolute Uncertainty: - Paper Size - 1/8 Of Original Paper:

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

    Therefore, the sand platform is replaced by a carbon paper(with carbon side up and a white paper taped on top of it) which makes a mark when the metal ball hits it. The range of the metal ball now is measured from the point directly under the muzzle of the container and the mark on the recording paper.

  2. IB Physics Lab - Resistance

    Objective * The objective of this lab is to determine how the equivalent resistance of a collection of resistors in series or parallel depends on the individual resistors. Hypothesis * I believe that the theoretical equivalent resistance of a series circuit and a parallel circuit will always be slightly more than the experimental equivalent resistance.

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

    the wooden ramp is linearly related to the angle of the slope of the ramp. From the hypothesis it was deduced that the relationship between the angle of the slope and the acceleration of the cart would be Where a = acceleration, g = acceleration due to gravity (?9.81 m s-2)

  2. HL Physics Revision Notes

    to support distance between particles and is overcome by the attraction force between them. Kinetic energy changes form from vibrational, rotational and part translational to merely vibrational. Potential energy decreases. ? While evaporating, certain particles in the liquid gain enough potential energy to escape the intermolecular bonds as a gas.

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