A Propeller Is Spun Up from Rest to 1500 Rpm

question 13

Multiple Choice

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

• A) 21Nm
• B) 11 Nm
• C) 42 Nm
• D) 21 Nm
• E) 130 Nm

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