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

Coefficient of Static and Kinetic Friction Phys 10 IB LAb

Extracts from this document...

Introduction

dan Stoica                April 1st, 2009

Coefficient of Static and Kinetic Friction

Problem:Is there a relationship between mass and the coefficient of static and kinetic friction?

Variables:  

                The manipulated variable is the weight of the object that is being pulled.

The responding variables are the static friction, kinetic friction, and the coefficients of those.

The controlled variable is the amount of weight that is added each trial, and the starting point on the scale.

Materials:

  • Wooden Block
  • Spring scale
  • String
  • 4 x 200 g masses

Procedure:

  1. Determine the weight(normal force) of the wooden block.
  2. Attach a string through loop around a wooden block as shown in the diagram.
  3. Adjust the force scale to zero while it is in the horizontal position.
...read more.

Middle

image01.png

image02.pngimage02.pngimage01.pngimage01.png

image02.pngimage02.png

Calculating Normal Force on Trial 1:
image01.pngimage01.png= mg

image01.pngimage01.png = (0.23817±0.001kg) (9.81ms¯²)
image01.pngimage01.png= 2.34±0.01N

Calculating the Coefficient of Static Friction:
image03.pngimage03.png
image04.pngimage04.png                
image05.pngimage05.png
                

...read more.

Conclusion

Improving:

        More trial measurements could be taken to improve the accuracy of the coefficients of static and kinetic friction. The scale should be electronic or newer to lead to more accurate measurements of static and kinetic friction. An accurate machine should pull the scale and the object so there is less error in the measurement.  The surface should be the same throughout the whole area, and there should be nothing on it that could cause errors in measurement.

Page  of

...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. physics lab report. Aim To determine the coefficient of static ...

    The difficulty in determining the instant at which the block started to move. The block moved so slowly that one did not always immediately notice its motion. 5. We assumed that at the instant of motion the frictional force acting on the block is equal to the weight of the hanging masses.

  2. Research question: Part A : What is the static friction coefficient of ...

    Static friction has to be overcome by any objects in order to move. Once the object has already moved, it will experience kinetic friction. Both frictions have their own coefficient. Static frictional forces from the interlocking of the irregularities of two surfaces will increase to prevent any relative motion up until some limit where motion occurs.

  1. Physics Friction Lab Report

    Repeat the exact same procedure two more times to obtain 3 trials. Do not polish the sandpaper, nor obtain a new sheet as this can disrupt the experiment. 12. Now add about 100 grams of masses more onto the wooden block and repeat again, obtaining three more trials 13.

  2. Determination of Coefficient of Friction

    ?Normal force = ?weight of the block + ?weights -> ?normal force = ?weight of the block + 0. For each situation with different number of weights, the normal force differs as well. I calculated the normal force in this way: Normal force = weight of the block + n

  1. Investigating the friction created on different surfaces. Factors that affect range of catapult

    Method for controlling variables:- 1. Two equivalent rubber bands were chosen and were attached to the legs and launcher of the catapult. The rubber bands were not changed during the whole test so that the elasticity of the rubber bands remained constant.

  2. Pendulum Lab

    Trial Number Time(s) needed to complete subsequent number of periods 1 period 5 periods 6 periods 10 periods Trial 1 1.1s(�0.1s) 6.8s(�0.1s) 7.89s(�0.1s) 13.43s(�0.1s) Trial 2 1.4s(�0.1s) 6.5s(�0.1s) 8.02s(�0.1s) 13.53s(�0.1s) Trial 3 1.0s(�0.1s) 6.6s(�0.1s) 8.16s(�0.1s) 13.23s(�0.1s) Trial 4 1.0s(�0.1s) 6.7s(�0.1s)

  1. Thermal Properties of Liquids

    for heating purposes. A 100ml is the minimum and most acceptable amount when investigating the heating properties of a liquid. Using more then a 100 ml for each trial run would be wasting the limited amount of liquids/substances that I have for this investigation.

  2. HL Physics Revision Notes

    Answer: Changing forests to dry land has 3 immediate consequences. The first is that a low albedo of the dark, moist forests is replaced by a higher albedo which reduces temperatures since more radiation is reflected rather than absorbed. The second is that the evaporation rate was decreased ? this

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