A Wind Farm Generator Uses a Two-Bladed Propeller Mounted on a Pylon

question 178

Multiple Choice

A wind farm generator uses a two-bladed propeller mounted on a pylon at a height of 20 m, as shown in the figure. The width of the pylon is very narrow, and the length of each propeller blade is 12 m. A tip of the propeller breaks off just when the propeller is vertical. The fragment flies off horizontally, falls, and strikes the ground at point P with negligible air resistance. Just before the fragment broke off, the propeller was turning uniformly, taking 1.2 s for each rotation. How far is point P from the base of the pylon?

• A)120 m
• B)130 m
• C)140 m
• D)150 m
• E)160 m

---

Definitions:

British North American Act

A 19th century act of the Parliament of the United Kingdom that established a federation and a federal system of government for Canada.

Wildlife

Animals, plants, and other organisms living in their natural habitats undomesticated or unaffected by human activity, important for biodiversity and ecosystems.

Canada

Canada is a country located in the northern part of North America, known for its vast landscapes, multicultural diversity, and strong economy.

Species At Risk

Species that are in danger of extinction or significant decline, requiring protection and conservation efforts to ensure their survival.