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    I have a set up where there is a crane like structure which needs to rotate. On the end of the arm is a 1000 kg weight. There is a horizontal handle on the crane which is pushed to rotate the crane around its base. I need to calculate the torque that needs to be applied to the handle. How is this done?

    Info: Looking at the 2d pic below, the force on the handle (which i need to find the torque for) is going INTO the screen. The 1000 kg weight is acting DOWN the screen. For clarification I am not trying to calculate the force required to stop the crane from tipping over.



    Thanks, JB
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    T = Ia

    where a is radial acceleration

    so therefore:

    5F = Ia
    5F = mr^2a
    5F = 100ma
    5F = 100 000a
    F = 20000a

    How much force depends on how fast you want to accelerate it.
 
 
 
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