A mobile is shown in the figure.The horizontal supports have negligible mass.Assume that all the numbers given in the figure are accurate to two significant figures.What mass M is required to balance the mobile? 
Definitions:
Regular Basis
Occurring or done frequently and at uniformly spaced intervals.
Marry
The legal or formal union of two individuals as partners in a personal relationship, recognized and sanctioned by civil, religious, or social conventions.
Adults
Individuals who are considered to have reached maturity in their society, typically marked by reaching a certain age or stage of development.
Age 45
A specific point in life, considered middle age, where individuals often experience significant life evaluations and transition.
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