A Propeller Is Spun Up from Rest to 1500 Rpm

question 48

Multiple Choice

A propeller is spun up from rest to 1500 rpm in 15.0 s under the influence of a constant torque. If the work done by the engine in giving the propeller its final angular velocity is 25 kJ, what is the torque supplied by the engine?

• A) 21 N·m
• B) 11 N·m
• C) 42 N·m
• D) 3.4 N·m
• E) 130 N·m

---

Definitions:

Exclusive Union

A labor union that is the sole representative of all the employees in a business or organization, having the right to negotiate on their behalf.

Knights of Labor

A significant labor organization in the late 19th century U.S. that advocated for broad social reforms, including the eight-hour workday, and welcomed all laborers.

Workers

Individuals engaged in a particular job or sector, contributing their labor for compensation.

Uplift Union

A union strategy focusing on improving the social and economic status of workers through education, community involvement, and positive labor relations practices.