Handout 5.1.2.1 Newtonian Gravitation PhET Activity

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University of Texas *

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Mechanical Engineering

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Apr 3, 2024

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~OnRamps Mechanics, Heat, and Sound (PHY 302K) Name: f l:1...M Handout 5.1.2.1: Newtonian Gravitation Ph ET Activity Today, you will use the Gravity Force Lab Ph ET Simulation to investigate what the gravitational force between two objects depends on and experimentally determine the Universal Gravitational constant, G. PreActivity and Beginning Observations 1) Write the f~rmula for the force of gravity (Law of Universal Gravitation). Label each variable and constant and include its units. ~-=- b'rii ( 'iVl,z r2 V: J 1ITc11c..{ Cilf~v; _,, /I '2 ( _ ,.. vi 7_ I f I/ I (¥\ 7 \D ~7 7 /)-p t'JVt1& c1ti co ((Jll~-r~(\ -= (o '&1 ;O, {(.J ,,I ' l--dJ 2) Open the Gravity Force PhET Simulation. What can you change about the simulation? Part 1 - Qualitative Observations 3) Look at the formula above. What three things can you change in the formula that you can als.o change in the simulation? Cc"li Chi)~/\'\ 1·h-e tYJ t liil\-~r"l1 :I' cf1,( -~rr~t1vJ~ 11 1 fl\A 5 f, (.~/I thq~-1 -rh--f Vt- 1 11\ l/r-.-c ~OV,(l(r(-", L v, ri v r 1,._~(1 ~" , 7 rH! d 'd r c; c-r 4) Change each variable and record what happens to the gr~vitational force as you change it. Be specific with your language (i.e. use terms like increase, decrease, remains constant). I l:" r 11 -r /11'61'11 c 1 1:- v. · ,, ) ~11-1 111-f t_>O :r'-e C '7)11/ftfJ..- 9f\ ('°'\.(f')"lJ"'l(?-( I~ t(')-e 10\tvi-r, ~TEXAS n:( U111"'Tui!)-oi Tt~ .l! •\.i.Nbl Mechanics, ·Heat, and Sound (PHY 302K) I 1 J 1
~Oi1Ramps Mechanics, Heat, and Sound (PHY 302K). Name: _________ _ Part 2 - Quantitative Measurements In this section of the activity, you will develop your own method for determining the gravitational cqnstant, G in the formula for gravity using the simulation and Excel. Consider what variables you can change in the simulation as you develop your procedure. You will turn in your procedure, data, graph and value for G. l (}v1 fiht /J'lpH'J_ £9 f tJ LcV) -'lC1-- tff...AM (\. I v •·r ru,'1!12. {J(/j (/f1 f~ / tJ fi1 -ff-((/ f?,;tlf( ,, Mechanics, Heat, and Sound (PHY 302K) I 2
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