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Mechanics problem

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    • Thread Starter

    Hi all, I haven't used tsr in about 5 years so forgive me if this is in the wrong sub, (physics might of been a another option)

    Anyway, I'm currently working on a project at work where we are building a robot to pull around a drinks trolley that we have purchased (currently pushed around by a person).
    And I need your help to figure out how much mass the robot we have bought can pull.

    I work for a finance company so my team has not got the best mechanics knowledge. I did do m1-m3 at a-level and maths at degree level but I have forgotten most of it, so I need your help!

    I have got a vague idea on how to figure it out. I have attached below my initial workings and the sort of setup we have. But I don't really know where to go from there. (I have forgotten how to balance forces). I also don't how how to use the torque to get a force.

    [img] imagen[/img]

    This is the robot we have bought.

    So some important figures,
    the mass is 2.7 kg
    11 kg-cm (160 oz-in) per motor
    Probably some more good info in the link above.


    Since you have the thing, you would be far better off dropping a string over the edge of a table and progressively loading it until the thing won't pull.
    It is likely that your main problems will be to do with terrain and how well the wheel/tyres cope with the office floor.
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