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:
Ethnic Food Choices
The preference for foods that are traditional or characteristic of the cuisine of a particular ethnic group or culture.
Cholesterol Intake
The amount of cholesterol consumed through the diet, an important factor in managing risks for heart disease.
Fat Intake
The amount of fat consumed in one's diet, important for nutritional balance and health.
Resting Energy Expenditure (REE)
The amount of energy, measured in calories, that a person expends while at rest, essential for understanding metabolic health and nutritional needs.
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