A 12,000-N Car Is Raised Using a Hydraulic Lift,which Consists

question 42

Multiple Choice

A 12,000-N car is raised using a hydraulic lift,which consists of a U-tube with arms of unequal areas,filled with incompressible oil and capped at both ends with tight-fitting pistons.The wider arm of the U-tube has a radius of and the narrower arm has a radius of .The car rests on the piston on the wider arm of the U-tube.The pistons are initially at the same level.What is the initial force that must be applied to the smaller piston in order to start lifting the car? (For purposes of this problem,you can neglect the weight of the pistons.)

• A) 727 N
• B) 926 N
• C) 2900 N
• D) 3330 N
• E) 1.20 kN

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Definitions:

Variable Electrical Costs

Costs associated with electricity that vary depending on the amount of usage or consumption over a period.

High-low Method

A technique in cost accounting used to determine the variable and fixed components of a company's costs by analyzing the highest and lowest levels of activity.

Machine Hour

A measure of the amount of time a machine is operated, used in cost accounting to allocate costs to products based on machine usage times.

Contribution Margin

The difference between sales revenue and variable costs, indicating how much revenue contributes towards covering fixed costs and generating profit.