A. Imagine that your lab group (which may or may not be taking physics in an...

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Physics

A. Imagine that your lab group (which may or may not be takingphysics in an alternate reality) creates a string with screws atpositions 1m, 2m, 3m, 4m, and 5m. You drop this string from aheight of 5m, just as the lab instructions tell you to do, and younotice that the time intervals between screws hitting the cookiesheet get larger with each screw. The first two impacts are closetogether, then a little farther apart, then farther, and farther.Assume that all your measurements and observations are more or lessaccurate and that you performed your drop correctly. What would youconclude from your data about the behavior of objects in freefall?

B. Now imagine that you are living in a world where free-fallingobjects have an upwards jerk (i.e. a negative jerk if down ispositive). In other words, they accelerate downwards, but thedownwards acceleration gets smaller and smaller with each beat.

i. Design a pattern of bolt positions that might produce asteady rhythm in this imaginary world. Think hard. This is hard.BIG Hint: to do this, you will have to pick some arbitrary, largedownwards acceleration to start out with, and some small constantupwards jerk (amount the acceleration shrinks by for each beat).But remember: jerk is a change in acceleration, not a change invelocity! Show ALL work relating to your pattern.

ii. Draw both a position and a displacement diagram for yourpattern.

iii. Using math, words, & diagrams (as necessary), explainwhy your pattern should produce a steady rhythm in the imaginaryworld where free-fall acceleration is downward but jerk is upward:i.e. justify your solution.

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4.1 Ratings (532 Votes)
A From this data we can conclude that there is at least anacceleration in the downwards direction because if not then theneither the velocity is constant or there is an upwardacceleration If the former then equal displacement spacing shouldtake    See Answer
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