(This may or may not be possible depending on the lighting and how reflective the glass covering the pointer is). 0000003062 00000 n Place the pins vertically upright (Check with a set-square), Place the the pins used to locate the path of the light ray more than 6 cm apart to minimise errors (Check that pin-pricked points are clearly marked and labelled), Use the view from the base of the pins when aligning pins in a straight line as the pins may not be perfectly upright, Measure the object and image distances along a line parallel to the principal axis. Replies. 0000003318 00000 n Reply. 784 531 4335. 0000001364 00000 n 0000009005 00000 n SIMPLE PENDULUM EXPERIMENT Inference: ... Pls state the value of the constant you deduced and the estimated errors I don't get this. 0000024756 00000 n Depends on what you are trying to achieve by this experiment. Remember your physics experiment lab report should include some sort of error discussion. something else? 0000006837 00000 n 0000005956 00000 n Put your eye directly above the pointer such that the reflection of the pointer in the glass cannot be seen or they both line up, Tighten the contacts between the wires and the components to reduce contact resistance in the circuit. Reply. This is because the temperature of the beaker is usually higher than that of water. trailer I really found this site interesting.....Many thanks . calculate the length and compare it to the real length? Instead, ask for a longer piece of wire. endstream endobj 338 0 obj<>/OCGs[340 0 R]>>/PieceInfo<>>>/LastModified(D:20061122164118)/MarkInfo<>>> endobj 340 0 obj<>/PageElement<>>>>> endobj 341 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>/Properties<>>>/StructParents 0>> endobj 342 0 obj<> endobj 343 0 obj<> endobj 344 0 obj<> endobj 345 0 obj[/ICCBased 366 0 R] endobj 346 0 obj[/Indexed 345 0 R 255 370 0 R] endobj 347 0 obj<> endobj 348 0 obj<>stream 0000007652 00000 n 0000001841 00000 n 0000005716 00000 n 0000002902 00000 n 0000025044 00000 n 0000004808 00000 n Having inaccurate instruments or estimating the measurements can cause errors. Stir the water or liquid in the vessel constantly during the experiment so that the temperature is uniform throughout the water. Errors in practicals and how to minimize them, Measurement, Significant Figures, Density, Avoid disturbance due to wind by switching off the fans and closing windows and doors, Ignore the first few oscillations and start timing only when oscillations are steady, Make sure that the angle of swing is small during timing (less than 5°), Measure the length of the pendulum from the point of suspension to the centre of the bob, When the oscillations of the pendulum become elliptical (wobbling), reject the timing, Whenever there is a gap between the scale and the mark to be read, a parallax error is present. ��QPHI٢��� S�BP���0�b66�@vP�b>�%�8� =v�G We are also calculating kinetic energy and gravitational potential energy. 0000012379 00000 n Timing oscillations. 0000000016 00000 n This is to avoid unnecessary heating in the resistance wire as a change in temperature can affect the resistance. Overheating may lead to over-expansion of the mercury thread resulting in a wrong reading and in some cases breaking the thermometer, Take temperature readings only when they are steady, When comparing heat loss due to a change in, for example, the colour of a cooling vessel, make sure that all parameters remain the same except for the colour of the vessel. official was 'distracted' during fatal crash. startxref Experiment 1: The Compound Pendulum A simple pendulum consists of a string (of negligible mass) attached at a pivot point and a mass at the other end. Replies. © 2020 SmartStudy Solutions — Powered by WordPress. 0000001035 00000 n Your email address will not be published. what is centripetal vs centrifugal in terms of circular motion? SmartStudy Solutions is an independent company and has not been authorised, sponsored, or otherwise approved by the Caribbean Examinations Council. Measurement, Mechanics, Practical Help, Scientific Method. Sources of errors in mechanics experiments. Reply Delete. 0000002979 00000 n 0000004400 00000 n 0000008185 00000 n Unknown 20 June 2018 at 22:22. Unknown 18 July 2018 at 05:31. xref Kingstown 0000003891 00000 n A set-square can be used to minimise parallax errors, Make sure the lens is upright and parallel to the screen, The illuminated object should be placed at the same height as the optical centre of the lens, Read the meters (voltmeters and ammeters) in such a way to avoid parallax. St. Vincent 0000010729 00000 n The Universe cant magic into existence, it has to have a cause. Also lining the container with good insulating material such as cotton or wool can help to minimise heat loss. �t��Z�Z?/ �h����M %%EOF 0000009857 00000 n CSEC® is a registered trade mark of the Caribbean Examinations Council (CXC). x�b```b``}��������π �@1V� ��u�(������z�� 2y����ܬ�VFs��{���_��g� ���٢��58 While writing up your lab report, you will often have to mention various sources of errors that you encountered while doing your physics experiment that could’ve affected your final results. endstream endobj 372 0 obj<>/W[1 1 1]/Type/XRef/Index[23 314]>>stream 0000025897 00000 n an error that you CANNOT CONTROL! The motion of the mass can be described as being simple harmonic in nature. 0000005276 00000 n 0000006615 00000 n 0000008052 00000 n Reply. Thank you very much .It really helped me with my physics practical report. Required fields are marked *. (Make sure that starting temperature for both experiments are the same), Avoid heat transfer by convection by switching off the fans and closing windows and doors, Use lids where possible to reduce heat loss by convection. 0 it’s not possible to conduct a perfect experiment. its for conservation of energy. Measure the value of g? When reading a measuring cylinder or thermometer, parallax errors can be minimised by viewing the reading at eye-level and at the meniscus. %PDF-1.4 %���� The contact resistance at the joint can be quite significant. The bar can be hung from any one of these holes allowing us to change the location of the pivot. We are also calculating kinetic energy and gravitational potential energy. 339 0 obj<>stream Check this by shaking/tapping the connecting wires lightly at each part of the circuit and observe the ammeter’s reading. METHOD: An experimental pendulum is suspended successively about several axes at different points along its length and the period about each axis is observed. If the reading fluctuates, it means there is a bad connection in the circuit, Make sure there is no ‘kink’ in a bare resistance wire especially when you have to measure the length of the wire accurately, Switch on the circuit for a few seconds before taking a reading and then switch it off immediately. The difference between the systematic and random errors can be seen by repeating a measurement of a physical quantity several times under the same conditions. 337 0 obj <> endobj a glacier moves a the rate of 43.0 meters per year. 0000002858 00000 n Get your answers by asking now. The most common source or errors in the diffraction grating experiment is in taking the measurements. 0000001548 00000 n The simple pendulum can be viewed as a point mass and is a resonant system with a single resonant frequency. Join Yahoo Answers and get 100 points today. How would time flow if we stayed absolutely still. 0000004137 00000 n Experiment 9: Compound Pendulum A compound pendulum (also known as a physical pendulum) consists of a rigid body oscillating about a pivot. Mc Intosh Street There are sources of error in measuring the period, but those can be minimized by various means, such as measurement over many periods, or photocell and counter methods. 0000001982 00000 n how far will it move in four centuries? This experiment uses a uniform metallic bar with holes/slots cut down the middle at regular intervals. 0000011603 00000 n Show that you are aware of the limitations in your practical and include them where necessary. H���Mo�0���. They make for good material to put in the discussion part of the lab report and usually indicate that you have a fair understanding of the limitations of the particular physics experiment that you were doing. If you find that the connecting wires are not long enough, do not join two pieces of wire. 0000015049 00000 n x�bb�c`b``Ń3� ����ԍ� �� <]>> 337 36 Still have questions? DOJ alums: Trump reelection could be 'point of no return', Iconic restaurant chain files for bankruptcy, For a closing argument, Trump attacks LeBron, Terry Bradshaw helps stranger in viral video, Don't know how you caught COVID-19? If it has a cause, it can only be eternal? You're not alone, Trump threatens to send in lawyers after election ends, Civil rights groups in Kansas City send warning to NBA, Fox ratchets up parenting spat with estranged husband, Chauvinism driving Black men to vote for Trump: Ex-NAACP head, Trump forces Fauci into difficult balancing act, Top S.D. ������ƌ7Op/8t0��Ő�����Ӥ%�y����5K���!8P������ȭ,��% B�D Here is a summary of some of these sources of errors and how to avoid them. experiment 10: Compound Pendulum OBJECT: To study the properties of a compound pendulum, and to determine the acceleration due to gravity by the use of such a pendulum. its for conservation of energy. 0000006465 00000 n Reply Delete. types of experimental errors: random errors and systematic errors. Replies. (Note: Do not use the thermometer as a stirrer), Do not place the thermometer at the bottom of the beaker when the water is being heated. How to find g from graph. 0000024525 00000 n for the basic pendulum experiment, where you time the speed of the pendulum going back and forth, and include how you would minimize the error. Reply Delete. Your email address will not be published. Make use of the vertical edge of a door, blackboard, a wall or a plumb-line to judge whether apparatus is vertical or not. New Montrose Use the teacher’s bench or the horizontal edge of the blackboard to judge whether or not your apparatus is horizontal. When reading meters such as voltmeters, ammeters etc, parallax errors can be minimsed by viewing the pointer from directly above such that the pointer coincides with its image reflection in the glass. 0000003015 00000 n 0000002414 00000 n Perform experiments in good insulating material such as a Styrofoam cup to minimise heat loss by radiation and conduction.

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