How Do You Calculate Torque on Shaft B Given Power and Angular Speed?

AI Thread Summary
To calculate the torque on shaft B, the relationship between power and angular speed is essential, expressed by the equation P = Cω. Given a power of 2.4 HP, which converts to 1790.4 watts, and an angular speed of 40 rad/s, the torque on shaft A is calculated as 44.76 Nm. To determine the torque on shaft B, one must establish the relationships between the angular speeds and power of shafts A and B. This requires assumptions about the belt's behavior, such as it being ideal and not slipping. Understanding these relationships is crucial for solving the problem effectively.
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Homework Statement


I am trying to solve 18-10
http://img845.imageshack.us/img845/7287/motorf.jpg


Homework Equations


P = Cω


The Attempt at a Solution


P = Cω

1 HP = 746 w
2.4 HP → 1790.4 w

C = P/ω = 1790.4 w / 40 rad/s
C = 44.76 Nm

I am really stuck with this problem, I don't know how to continue.
Your help will be appreciated.
 
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If you know the power and angular speed of shaft B you would know how to calculate the torque on shaft B. So, that leads to two questions:

1) Can you find a relation between the angular speed of shaft A and B?

2) Can you find a relation between the power of shaft A and B?

What must you assume about the belt for those two relations to be valid?
 

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