A Circular Saw Is Powered by a Motor

question 68

Multiple Choice

A circular saw is powered by a motor.When the saw is used to cut wood, the wood exerts a torque of 0.80 N∙m on the saw blade.If the blade rotates with a constant angular velocity of 20 rad/s the work done on the blade by the motor in 1.0 min is:

• A)0 J
• B)480 J
• C)960 J
• D)1500 J
• E)1800 J

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Definitions:

Second Largest City

A term used to describe the city that is the second most populous within a given country or region.

Internal Improvements

Public works, such as roads, bridges, canals, and harbors, funded by the government to facilitate commerce and communication.

Old Northwest

Refers to the region of the United States northwest of the Ohio River, which was acquired through the Treaty of Paris in 1783 and organized under the Northwest Ordinance of 1787.

Interchangeable Parts

Interchangeable parts are components that are made to specifications that ensure they are so nearly identical that they will fit into any assembly of the same type, reducing manufacturing complexity and allowing for easier repair of mechanical systems.