ِAn Overhead Garage Door Has Two Springs, One on Each

question 77

Multiple Choice

ِAn overhead garage door has two springs, one on each side of the door. A force of 12 pounds is required to stretch each spring 1 foot. Because of the pulley system, the springs stretch only One-half the distance the door travels. The door moves a total of 10 feet and springs are at their Natural length when the door is open. Find the work done by pair of strings.

• A)150 ft-lb
• B)300 ft-lb
• C)2,400 ft-lb
• D)1,200 ft-lb
• E)600 ft-lb

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Definitions:

Multi-step Procedure

A complex process involving several stages or actions to achieve a particular end.

Decision-making Power

Decision-making power is the authority to make decisions within an organization, often held by managers, leaders, or governing bodies.

Quick Resolutions

The rapid settlement or conclusion of a dispute, issue, or problem, aiming for efficiency and minimal disruption.

Collective Agreement

A written contract negotiated through collective bargaining by and for employees with their employer, detailing wages, hours, and working conditions.