A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to a height of 2.10 m,as shown in the figure.The base of the ladder rests on a rough horizontal floor whose coefficient of static friction with the ladder is 0.800.An 80.0-kg bucket of concrete is suspended from the top rung of the ladder,right next to the wall,as shown in the figure.What is the magnitude of the friction force that the floor exerts on the ladder? 
Definitions:
Proportional Tax
A tax system where the tax rate remains constant regardless of the amount on which the tax is levied.
Marginal Tax Rate
The percentage at which the next dollar earned of taxable income is subjected to tax.
Average Tax Rate
The total amount of taxes paid by an individual or business divided by the taxable income, reflecting the proportion of income paid in taxes.
Flypaper Theory
A concept suggesting that government grants and subsidies stick where they first land, meaning they benefit the entity they're directly given to rather than being efficiently redistributed.
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