A 50-M Long, 12-Kg Uniform Ladder Rests Against a Smooth Vertical

question 30

Multiple Choice

A 5.0-m long, 12-kg uniform ladder rests against a smooth vertical wall with the bottom of the ladder 3.0 m from the wall. The coefficient of static friction between the floor and the ladder is 0.28. What distance, measured along the ladder from the bottom, can a 60-kg person climb before the ladder starts to slip?

• A) 4.0 m
• B) 3.7 m
• C) 1.7 m
• D) 1.3 m
• E) 3.3 m

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Definitions:

Variable Utilities Cost

Expenses for utilities such as electricity and gas that vary in proportion to a company’s level of operation or production activity.

High-low Method

A technique used in managerial accounting to estimate fixed and variable costs associated with production.

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A unit measure representing the operation of one machine for one hour, used in costing and operational efficiency analysis.

Plant Expansion

A process by which a company enlarges its operational capacity or adds to its production capabilities, possibly by acquiring more space, machinery, or buildings.