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Question basic physics

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Arazok, Apr 6, 2018.

  1. Arazok

    Arazok Member

    Joined:
    Mar 26, 2018
    Messages:
    161
    Occupation:
    Computer scientist
    Location:
    Germany
    Balance:
    951Coins
    Ratings:
    +30 / 0 / -0
    My Motion Simulator:
    2DOF
    Hi,
    can someone help me with basic physics of mechanics ?
    Pls see the attached sketch.
    Can you answer the question to calculate F ?

    Even after reading the SimCalc mathematics, this is not fully clear to me.
    So every help is appreciated :)

    Berechnung.png
  2. Arazok

    Arazok Member

    Joined:
    Mar 26, 2018
    Messages:
    161
    Occupation:
    Computer scientist
    Location:
    Germany
    Balance:
    951Coins
    Ratings:
    +30 / 0 / -0
    My Motion Simulator:
    2DOF
    And another question to mechanics:
    If I would like to (simplified) calculate how many torque my motors should have, can i go this way:
    M = F * s
    F = 1200N (see example above)
    s = 5 cm = 0,005m (length of CTC modul) which leads to ~ 10 cm / 100 mm linear movement because of +/- 90 degree (if the rod is directly fitted below rod mount)
    --> 1200N * 0.05 m = 60 Nm (divided by 2, as I would liek to use 2 motors)
    --> each motor needs to be capable of 30 Nm

    Is this correct ?
    And are the 30Nm for each motor the starting (peak ?) torque or the "normal" torque when running ?

    Thanks for help !