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

Measurement of centripetal force required for circular motion

Extracts from this document...


Physics TAS I Date: 8th Oct, 2004 Title: Measurement of centripetal force required for circular motion Objective: To measure the centripetal force required for a mass whirling around a horizontal circle and compare the result obtained with the theoretical value F=mw�r. Apparatus: 1 rubber bung, 1 glass tube, screw nuts, 1 nylon string, 1 paper marker, I metre rule, 1 stop watch, 1 balance Set-up: Procedure: 1. The centripetal force apparatus should be constructed as shown in the above diagram. 2. The length of the nylon string that was under investigation was measured (e.g. 0.3 m) from the centre of the rubber bung to the glass tube and the particular length L was marked with a paper marker. ...read more.


A uniform whirling speed should also be maintained throughout the experiment. 3. A certain distance will be kept from your partner when whirling the rubber bung. 4. The time should be counted after the circular motion of the rubber bung became steady. 5. A reasonable range of length of the string should be selected. Theories: When the rubber bung is whirling around a circle with a radius r equals to Lsin?, where ? is the angle between the glass tube and the string, the centripetal force F required for circular motion of the rubber bung is provided by the tension T of the string. ?F= Tsin? = mw�r = mw� Lsin? ?T=mw�L, regardless of the angle ?. ...read more.


2. L(measured)>L(true):The edge of the glass tube was rough, hence the measured length might not be accurate, in such case L might be larger than the actual value. 3. m(measured)>m(true): This might be due to the reading error when using the balance. 4. M(measured)<M(true): This might be due to the reading error when obtaining the weight of the screw nuts. Suggestions for a higher accuracy: 1. A certain position should be marked when the stop watch started to count and the same position should be reached when the stop watch was stopped. 2. A glass rod of smooth edge should be used. 3. Instead of a balance, an electronic balance might be used. Percentage error: Conclusion: The centripetal force measured in this experiment is slightly smaller than the theoretical value. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Forces and Motion 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 GCSE Forces and Motion essays

  1. Lab Report on Centripetal Motion

    30.5 Constants: * Radius is meant to be constant; although that is impossible (the radius in the readings has a range of 5 cm, which is quite large) * Mass of spring and ball Data Processing Now, the extension must be calculated.

  2. Investigating centripetal force

    * Placing a paper clip just below the grip will ensure the radius stays the same. The variable I will measure is the velocity of the rubber bung. Using a stop clock the time for 20 revolutions will be recorded.

  1. report on glass

    The long thin metal tube used in the blowing process has changed very little since then. Then the ancient Romans In the last century BC began blowing glass inside moulds, this increased the variety of shapes possible for hollow glass items.

  2. Acceleration, Force and Mass

    The formula for acceleration, as previously stated is: (average) acceleration (m/s�) = change in velocity (m/s) or in symbols: a = v - u time taken for the change (s) The time taken in this equation is that for ten dots and this equates to a time period of 0.2 seconds.

  1. Investigate how the weight of an object affects the force required to overcome friction.

    This can be done by multiplying its mass by the force of gravity (approximately 9.8N/Kg) o The block of wood will then be placed at start of the strip of P60E sand paper and the small-scale force meter will then be attached to the hook on the wood.

  2. &amp;quot;Oh My Elbow - Investigation Into Force Applied To Elbow Joint&amp;quot;.

    The specific errors in measuring these quantities include: Zero Errors - When the spring balance is not set at exactly zero, or if the protractor is not in line with the vertical. I will be checking these thoroughly before actually performing my experiment.

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