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Question:

Please help me with this Efficiency of Machines question?

I've already tried it but I'm not sure I got the right answer because I don't have the answer key and I can't find it on the internet.quot;A motor having an efficiency of 88% operates a crane having an efficiency of 42%With what constant speed does the crane lift a 410-kg crate of machine parts if the power supplied to the motor is 5.5kW?quot;You don't have to tell me how to do it, I just want to see the answer you come up with.

Answer:

I think the efficiency of the crane is just to confuse, unless the question stated that the crane arm was also rotating, you can ignore that figureAs it asks only for the constant speed with which the crate is lifted: I came up with 1.20 m/s, assuming that g 9.81 m/s^2
6.02 time 10 to the 23rd
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I can't figure out what you're trying to say

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