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Moment and Equilibrium - Lab Report Example

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Summary
This lab report "Moment and Equilibrium" aims at verifying the equilibrium of force on a beam experimentally and analytically using the concepts and equilibrium and finding the reactions of the left and right weights. The turning effect is obtained is the moment of force…
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Moment and Equilibrium
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Extract of sample "Moment and Equilibrium"

Moment and Equilibrium Introduction An object is in balance when it has no trend to turn or change, that is no conversion and no spinning. When a figure is in equilibrium the anticlockwise moments round a point is equivalent and contradictory to the totality of the anticlockwise moments about that point and likewise the resulting force is zero (Lee, 2010). This is presented by the demonstrations chosen some loaded beams. Moment of force, therefore, is that force that is due to the revolving effect, for example when a force is subjected to one end of a body whose other end is attached to a pivot, that pulls or push will tend to revolve the object about the pivot thus that turning effect obtained is the moment of force.

AimThe aim of the experiment is to verify the equilibrium of force on a beam experimentally and analytically using the concepts and equilibrium and finding the reactions of the left and right weights (Lee, 2010).ApparatusStand, boss and clampMetre ruleLoop of threadMass hanger and some slotted massesMethodThe boss, stand and clamp is set so that the bar of the clamp is straight and its tallness above the seat is few centimetres further than the length of the mass hangerThe thread loop is attached over the zero mark of the metre ruleThe mass is suspended from the lowest of the loop underneath the metre ruleThe loop is slided to about 1cm mark of the metre ruleThe metre rule is relocated and the suspended masses so that it equilibriums horizontally on the slab of the clamp standThe experiment is repeated three times to get more resultsResultsDiscussion From, 0=P1X1 +P2X2 + P3X3 – RBL, that is in case II0=20 x 18 + 15 x 51 + 10 x 78 – RB x 100360 + 765 + 780 – 100Rc = 01905 = 100RcRc = 19.

05But RB + RA= P1 + P2 = P319.05 + RA = 20 + 15 + 1019.05 + RA = 45RA= 25.95CaseIII0 = P1 X 1 + P2X2 + W + L/2 – Rc + L0 = 20 x 0.18 + 10 x0. 51 + 11.14+ 1/2 – Rc + 1RB= 3.6+ 5.1+ 11.14+ 0.5 + 1RB = 21.34P1 + P2 +W = RA + RB20 + 10 + 11.14 = RA + 21.34RA =19.8Sources of ErrorsRandom errorTaking measurements by several people would mechanically give dissimilar values since each individual may stretch the string by diverse tension. To minimize is by stipulating the circumstances that could lead to the error.

Environmental factorsTaking into consideration of errors presented by the instant working environment. There is a need to take into account or shield the experiment from shakings, drafts, variations in temperature, electronic sound or other effects from neighboring apparatus (Lee, 2010).ParallaxThis error can happen when there is some length or distance between the measuring balance and the indicator used to attain a measurement. If the viewer's eye is not directly aligned with the indicator and scale, the interpretation may be extraordinary (Lee, 2010).

Physical variationsIt would be essential to take numerous measurements so as to be examined for accuracy.ConclusionThe graph shows the relationship between the moments in equilibrium since the clockwise moments should be equal to the anti-clockwise moments.

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