SOLUTION: What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 7.20 rev/s, when the tool to be sharpened is held against the wheel wi

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Question 1056856: What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 7.20 rev/s, when the tool to be sharpened is held against the wheel with a force of 47.0 lb? The coefficient of friction between the tool and the wheel is 0.310 .
Answer by ikleyn(52830)   (Show Source): You can put this solution on YOUR website!
.
What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 7.20 rev/s,
when the tool to be sharpened is held against the wheel with a force of 47.0 lb?
The coefficient of friction between the tool and the wheel is 0.310 .
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

Had the units be in metric system, the answer would be

Power = ,

where r is the radius, n is the number of revolutions per second (7.20),  is the friction coefficient (0.310) and F is the force.

In the given units you need to make an appropriate conversion of units.

So, consider my response as some hint.
It is not the complete solution.


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