{"text_format":"3","workbook":"xlsx","n_sheets":2,"sheets":["Gravity","Sheet2"],"not_rendered":{"charts":1,"images":2,"defined_names":7,"comments":1},"read":"whole","date_system":"1900"}

{"sheet":"Gravity","index":0,"n_rows":32,"n_cols":13,"rows_kept":32,"merged":[[25,2,25,3]]}
[null,"Universal Law of Gravitation"]
[]
[null,"This DIGMath module lets you investigate"]
[null,"        the Universal Law of Gravitation"]
[null,null,"for the net force on an object"]
[null,"          travelling between two planets"]
[null,"       with different masses M1 and M2."]
[]
[]
["How does the mass of the second planet M2 compare to M1?"]
[null,"(between 10% and 10 times as massive)"]
[null,null,{"$f":"IF(D12<20,0.1*D12+0.1,2+0.5*(D12-19))","v":2.5},20]
[]
[]
[]
[]
["Click each item below for suggestions and investigations"]
[{"$nulls":3},"   Item 1"]
[{"$nulls":3},"   Item 2"]
[{"$nulls":3},"   Item 3"]
[{"$nulls":3},"   Item 4",{"$nulls":4},"Now trace a point along the trajectory"]
[{"$nulls":10},123]
[{"$nulls":8},"r =",{"$f":"K22*dt","v":0.615},"=",{"$f":"J23*100","v":61.5},"% of the distance"]
[{"$nulls":8},"F =",{"$f":"LOOKUP(J23+0.001,Sheet2!C3:C184, Sheet2!D3:D184)","v":{"v":14.222321754171269,"d":"14.222"}}]
["To access/download all the DIGMath Apps for Calculus"]
["     Click this link:",null,"DIGMath for Calculus"]
[]
["Created by:  Sheldon P. Gordon   "]
["                      Farmingdale State College    "]
["Development of this module was supported by the "]
["NSF's Division of Undergraduate Education  "]
["under grants DUE-0310123 and DUE-0442160."]

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