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

Investigating maximum braking conditions in a bicycle

Extracts from this document...


Investigation- maximum braking


Many measures have been taken by the companies to increase the safety level of cycles. Investigating as the factors would require further studies. However, one of the important factors is the brake. Modulation and braking efficiency have been taken into account by many companies.

Important factors to be considered are:

Weight distribution of the rider on bicycle (shift in the center of mass)

Weight and load transfer during braking

The friction acting on the bicycle’s tires

AIM: To investigate the effect of limitations on maximum braking on a free- ride bicycle.

RESEARCH QUESTION: what limitations affect the maximum braking in a free ride bike?

Considering the factors:

Static friction: The bike is subjected to static friction when it

...read more.


Therefore the clockwise moment force can be derived considering, where Fis the braking force, m is the combined mass (rider and bike) and a is the acceleration due to braking. The clockwise moment will be

         Where H1 is the perpendicular distance to the line of action

        The counter clockwise moment force will be

        Where mg is the weight and L2 the perpendicular distance to the line of action.

        By equating the 2,

        Thus, a ( the maximum acceleration permitted) =  =



Weight distribution


Tyre air pressure


Brake force

Surface conditions



...read more.


Calculate the Centre of Mass using the following formula:

Vertical positioning of Centre of Mass (rider):

Using a board, place one end on a scale.

The rider is to lie on this board with the end of his head at the of the board on the side with the scale.

Place rider in riding position

Place an object the same height as the scale under the board where the rider’s feet end.

Record the value visible on the scale.

Calculate the Centre of Mass by the following formula:

Vertical positioning of Centre of Mass (bike):

Hang the bike from one point and drop a string with a weight. Mark generally the lone on the bike frame

Repeat step 1 twice from different points

Measure the height of each from the ground and combine them

Use the formula  to calculate the maximum acceleration.

...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. Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

    This indicates that the tension values decrease but not uniformly. String Type: - Elastic Band Due to the close proximity of the four series, it is difficult to display the polynomial equation on the graph. Here are the polynomial equations for all the four series: - Length of the String (in cm)

  2. Determination of Coefficient of Friction

    I will find it for every situation in this way: sin?=height/plane length -> ?=arcsin(height/plane length): ?=arcsin(13.8/51.3)=15.6� ?=arcsin(11.9/51.3)=13.4� ?=arcsin(10.5/51.3)=11.8� ?=arcsin(10.1/51.3)=11.4� ?=arcsin(9.0/51.3)=10.1� Now I will determine the absolute uncertainty of angle measurements. To do this I will have to add relative uncertainties for every situation and the biggest found uncertainty will be taken as the absolute uncertainty for the angle measurements.

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

    Comparing experimental results to theoretical hypothesis According to the theoretical hypothesis, the range of metal ball should be directly proportional to the square root of the projection height. Thus, the quadrupling of the projection height would lead to twice the range of metal ball.

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

    However the formulas expressed above are only true for my metal bar of 17cm long, thin cylinder shape and 14.1 grams, as other metal bars will have different formula between their distance l and its period and frequency. Nevertheless, for any metal bar its will be inversely related to its period and directly proportional to is frequency.

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

    It is that threshold of motion which is characterized by the coefficient of static friction. The coefficient of static friction is typically larger than the coefficient of kinetic friction. This is because when surfaces are in static contact, their microscopic hills and valleys can nestle down deeply into one another, thus forming a strong connection between the surfaces.

  2. Temperature distribution at different depths of soil

    Look at the light intensity in your Temperature sensor if it has one in order to maintain the same light intensity when you are looking for your next area i.e. to control the other controlled variable. 3. When digging go down as far as 40 cm.

  1. Centripetal Force

    Keep adding an extra 10 g mass to the mass carrier. Data Collection: Radius of the string, r = 0.3 m Mass of the rubber stopper: m=0.0187 kg Table 3.1 Result of time taken for 10 revolutions for mass 10 g Trial Time Taken t(s)

  2. How does the sinkage depth of a tyre affect its rolling resistance ?

    I am interested in automobiles. I discovered that the air pressure of a tire on regular surface is detrimental to the performance of the automobile when I used regular air pressure in my cycle to ride on the beach. I faced difficulties in pedaling my cycle because the tires of

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