Find the magnitude of a force supported by a bearing

In summary, the problem involves finding the magnitude of the force at bearing B in an assembly where the weight is supported by bearing A and there is a 120 Nm couple to the shaft. The plate has a mass of 15 kg and is prevented from turning by a cable from C to D. The solution involves finding the tension in the cable and using that to determine the force at bearing B.
  • #1
wannawin
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0

Homework Statement

Find the magnitude of the force supported by bearing B if the weight of the assemble is supported entirely by A and there is a 120 Nm couple to the shaft. The plate has mass of 15 kg. The cable from C to D prevents the plate from turning.

http://img299.imageshack.us/i/assignment42010.png/

The Attempt at a Solution


I'm not really sure where to start on this one. I know the entire assembly is in equilibrium, but no idea where to go from there.
 
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  • #2
hi wannawin! :smile:

"the weight of the assembley is supported entirely by A", so the force at B must be purely horizontal

first find the tension in the cable, then find the force at B :wink:
 

1. What is the definition of a bearing?

A bearing is a mechanical component that supports a rotating shaft and reduces friction between moving parts.

2. How do you find the magnitude of a force supported by a bearing?

The magnitude of a force supported by a bearing can be found by using the equation F = μN, where F is the force, μ is the coefficient of friction, and N is the normal force.

3. What factors affect the magnitude of a force supported by a bearing?

The magnitude of a force supported by a bearing is affected by the coefficient of friction, the normal force, and the speed of rotation. Other factors such as lubrication and temperature can also have an impact.

4. How does the type of bearing affect the magnitude of a force?

The type of bearing can have a significant impact on the magnitude of a force. For example, a roller bearing can support higher forces than a plain bearing due to its rolling motion and larger contact area.

5. Why is it important to determine the magnitude of a force supported by a bearing?

Determining the magnitude of a force supported by a bearing is important for ensuring the bearing can handle the required load without failing. This information is crucial for designing and selecting the appropriate bearing for a given application.

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