Power lost due to friction in a propeller

AI Thread Summary
The discussion focuses on calculating power lost due to friction in a propeller system, emphasizing the need to understand the relationship between torque, angular velocity, and kinematic viscosity. Participants highlight the importance of determining the area, velocity, and work done per second to find the power loss. A formula for force related to viscosity is referenced as a key component in the calculations. The conversation suggests that the basic equation p = w/t is relevant but requires further derivation or substitution to apply effectively. Overall, the thread aims to clarify the necessary steps and formulas for accurately assessing power loss in the system.
Abigail1997
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1. Homework Statement
Calculate the power lost in friction in the system shown above, with d=0.36, rpm=200, u=0.72, prop=1m and oil=0.23m

Homework Equations


I know p=w/t comes into it in some form, either with other equations subbed in or a derivation somewhere, but not sure.

The Attempt at a Solution

 
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Power = torque * angular velocity
 
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