An Overhead Garage Door Has Two Springs, One on Each

question 117

Multiple Choice

An overhead garage door has two springs, one on each side of the door. A force of 16 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 16 feet and springs are at their natural length when the door is open. Find the work done by pair of strings.

• A) 512 ft-lb
• B) 1,024 ft-lb
• C) 8,192 ft-lb
• D) 4,096 ft-lb
• E) 2,048 ft-lb

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Definitions:

Meeting-The-Competition Defense

A legal defense allowing a business to justify certain behaviors, such as price fixing, by proving they were necessary to meet a competitor's prices.

Per Se Defense

A legal argument that, if proven, is sufficient by itself to defend the position of the defendant without the need for further evidence.

Exclusive-Dealing Contract

An agreement in which a seller requires that a buyer buy products supplied only by that seller.

Exclusionary Contract

An agreement that restricts a party from engaging in similar agreements with other parties, often used to protect business interests or trade secrets.