Question On Effects of Changing Criteria Of Pulleys

In summary, the effect of increasing the included angle of the pulley groove is that it will change the maximum power that can be transmitted. This is because as the angle of the pulley groove increases, the contact area between the belt and the pulley decreases, resulting in a decrease in the maximum power that can be transmitted.In regards to the second question, increasing the load torque while maintaining constant speed will result in an increase in tension on both the tight and slack sides of the belt. This increase in tension will also result in an increase in the maximum power that can be transmitted. This is because the increased tension will allow for a tighter grip between the belt and the pulley, allowing for more power to be transferred.Overall, the
  • #1
Joeyboy1
2
0
1.What would be the effect of the following factor on the maximum power that can be transmitted. (give reasons for your answers)
Increasing the included angle of the pulley groove.

2. What would be the effect on the following if the load torque is increased and the speed maintains constant?
The tension in the tight side of the belt
The tension in the slack side of the belt
The power transmitted


I can plug different parts into equations and have gathered that increasing the torque will make both sides of the belt tighter and increase the maximum power transmitted however I can't explain this?
 
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  • #2
Hi Joe, welcome to PF :)

Please read back your post and put yourself in a helper's position: there's nothing to indicate what this is all about.
Pick up the template once more and try to compose a self-sufficient problem formulation, ... etcetera.
I'll be glad to help out, but give use a chance ! We're not telepathy masters, just simple scientists!

Homework Statement



2. Homework Equations

3. The Attempt at a Solution
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  • #3
Basically there is a motor driving a pulley linked to another pulley via a v belt. And then that is just asking in theory what effect each has on those parts, there are no formulas to work out it is the actual reasoning behind it of which I don't understand.
They are all self standing questions of which that is all that is given, it's asking for a written answer in theory.
 
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1. What is the purpose of changing the criteria of pulleys?

The purpose of changing the criteria of pulleys is to alter the mechanical advantage and efficiency of a pulley system. This can result in easier or more efficient lifting and lowering of objects.

2. How does changing the criteria of pulleys affect the force required to lift an object?

Changing the criteria of pulleys can either increase or decrease the force required to lift an object. If the criteria is changed to increase the mechanical advantage, then less force will be required to lift the object. On the other hand, if the criteria is changed to decrease the mechanical advantage, more force will be needed to lift the object.

3. What factors should be considered when changing the criteria of pulleys?

When changing the criteria of pulleys, it is important to consider the weight of the load, the desired force needed to lift the load, and the available space for the pulley system. Other factors such as friction and the strength of the pulley materials may also need to be taken into account.

4. Can changing the criteria of pulleys have any negative effects?

Yes, changing the criteria of pulleys can have negative effects if not done carefully. If the mechanical advantage is increased too much, the pulley system may become too complex and cause unnecessary friction. Additionally, if the criteria is changed without considering the weight of the load, it could lead to an unsafe and unstable system.

5. How can the effects of changing the criteria of pulleys be measured and evaluated?

The effects of changing the criteria of pulleys can be measured by analyzing the force required to lift the load, the speed at which the load is lifted, and the overall efficiency of the pulley system. These factors can be compared to the results of the previous criteria to determine the effectiveness of the changes made.

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