Torque needed to overcome friction and move object

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    Friction Torque
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SUMMARY

The discussion focuses on calculating the torque required to move an object horizontally when subjected to a force P. The setup involves a horizontal lever connected to a vertical shaft, with the lever either hinged or sliding against the object, which has varying friction coefficients. The torque must account for both the applied force P and the frictional forces present in the different connection scenarios. Understanding these dynamics is crucial for accurately determining the necessary torque in each case.

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  • Basic principles of torque and rotational mechanics
  • Understanding of friction coefficients and their impact on motion
  • Knowledge of lever systems and their configurations
  • Familiarity with force diagrams and free-body analysis
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  • Research the effects of different friction coefficients on motion
  • Explore the mechanics of hinged versus sliding connections in lever systems
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Mechanical engineers, physics students, and anyone involved in designing or analyzing systems that require torque calculations for moving objects.

tien87
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I need to calculate the torque needed to move an object in horizontal direction. The object is subjected to a force P also in horizontal direction. The general situation is as follows: a (hor.) lever is connected to a (vert.) shaft which will provide the torque. The other end of the lever is connected*to the object. Now, my problem lies in understanding the torque needed to move the object for different types of connection between lever and object. There are 3 situations: connection is a hinge* or there is no fixed connection but the lever can slide against the surface of the object with a high* friction coefficient or very low* coefficient. So, apart from the force P applied to the object, the lever also has to overcome the force due to friction with the object surface or the force on the hinge.
 
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Where does the friction of the object occur?
Can you add a sketch of your setup(s)?

At least for me, the problem is quite unclear.
 

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