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Number 3 Royal Air Force Force Protection Wing Headquarters (3 FP Wg HQ) is based at RAF Marham.In The Name Of Love (12")
In The Name Of Love (...In The Name Of Love (Remixes) (CD, Maxi)
In The Name Of Love (3...Mystic Trance (2xCD)
It's Real (Klubbingman...Add Release: Click this button to add a release to this artist's discography.Help
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more...Root decorator: all decisions about how a page is to be decorated via the
inline decoration begins here.However, for now, just delegate to a decorator
identified directly by the context.Tip: Looking for a label?LAB 3: FORCE AND ACCELERATION
Study of Newton's Second Law of Motion
An object which is free to move horizontally without friction is subjected to a series of known forces and its acceleration is measured for each force.The measured accelerations are to be plotted graphically as a function of the applied force.Young and Freedman, University Physics 11th Ed.With Modern Physics, Chapter 4
Basis of the Experiment
A linear air track provides a nearly frictionless path for a glider resting on it (Fig.These weights with the hanger provide the variable applied force.The equations governing the motion are:
(1)
(2) .Equation (3) is what we wish to investigate.Newton's Second Law applied to and separately.Plan of the Experiment
In the experiment, M remains constant while movable pieces of mass (loose weights) are transferred from glider to hanging support.Each such transfer decreases and adds to (and therefore increases F without changing M).For each value of F, is constant during the motion.The acceleration is constant (one of our basic assumptions) for a given value of masses because it derives from the gravitational force acting on those masses; it is not of course, equal to the constant gravitational acceleration of free fall at any time.This point (Z) should be measured relative to the leading edge of the glider's "fin" and not it's base, since it is this part of the glider that will be triggering the photogates.If the glider leaves a fixed point on the track, moving to the right, it will interrupt each of the beams in order.The upstream (U) interruption starts the two timers.The interruptions at C and L turn off the UC and UL timers respectively.These measurements are made readily using the metric scale that is permanently mounted on the track.With these two numbers, S and , we can then deduce the acceleration of the glider from
.And, just as in Experiment 1,
.Procedure
Several such acceleration measurements will be made, for different masses but constant total mass M.This total mass (M) remains constant.You will also need to measure the hanger weight and the individual weights to determine for various arrangements.To Guard Against Some Potential Problems in Setting up Your System:
Practice starting and stopping the glider to get a feel for the speeds involved and the techniques required.Practice releasing the glider from rest (starting at the backstop position and letting go without imparting any initial velocity).If the transit times are not essentially the same, you are giving the glider some initial velocity in the process of releasing it.Do this at least twice before changing the weights, and calculate the corresponding values of acceleration; if there is inconsistency make further adjustments and measurements until the inconsistency is eliminated and you have at least 2 runs in reasonable agreement.Note the potential problems described in the preceding two paragraphs.Remember, you need to specify for each mass arrangement.Analysis of Data
For each mass combination calculate the applied force , and for each run, calculate the value of the measured acceleration .Plot the measured acceleration as a function of the applied force
().Estimate the uncertainty in the slope.Does it pass through the origin?Calculate M from the slope, estimate the uncertainty in this value, and compare with the value of M determined by weighing.If any of these answers is "no", try to suggest what might have caused the discrepancy.Root decorator: all decisions about how a page is to be decorated via the
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(new Image()).Probably only worth watching if you need tips on playing a druid, and how they balance up in the end game.This is a great wheel that is easily the best one you'll find on the Xbox and is a steal now that you can get it for less t han a hundred bucks.The New York Times Company.
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