Recent content by Chandan Pednekar

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    Tension in 4 strings suspending object at 4 different points

    Please ignore calculation link of post #18 as those are incorrect. I tried to solve the simultaneous equations without first reducing vectors to unit vectors. Here is the new link. https://imgur.com/a/OF35b I have tried to solve equations by considering all suspension cables to be identical...
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    Tension in 4 strings suspending object at 4 different points

    Guys. I was wrong about the motor safety factor. Seems stall torque is not a good measurement for safety factor as actual torque while motor is rotating is much lower. How can I calculate torque for a 60rpm motor, 1:270 gear ratio, given 75pwm value through arduino while rotating? Also, I am...
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    Tension in 4 strings suspending object at 4 different points

    Hi Nidium. Thanks for simplifying what others have stated. I have made approximations in suspension cable lengths and calculated for both cases. 1. Actual (where the dimensions of cable are roughly similar to the actual dimensions) 2. Approx (where I have considered all the cables to be in...
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    Tension in 4 strings suspending object at 4 different points

    Thanks. I'll take this into account for further calculations.
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    Tension in 4 strings suspending object at 4 different points

    Yes you are right that three taut strings should hold a rigid plate. So i suppose it cannot be considered a rigid plate, since the grid is made of ropes and won't act like a rigid plate unless pulled taut from all four corners. I'll have to make some more considerations.
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    Tension in 4 strings suspending object at 4 different points

    Update : We built a scale model yesterday of 1:10 ratio to check grids behavior. It was observed that the grid will be taut enough to be considered as a uniform plate. Also, the the cables suspending the grid from the structure will be taut enough to have very little slack in them. Any other...
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    Tension in 4 strings suspending object at 4 different points

    Hi. For now let's assume that square is rigid. I want to know, what I did in calculations, is it right? Or are there any other ways to do this?
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    Tension in 4 strings suspending object at 4 different points

    Could you please point me to similar or same problems? Three cables are going to be fixed to structure. Remaining one will be wound to motorized pulley where pulley is fixed to fourth point on structure. Wouldn't that mean those 3 fixed point cables are always going to be under tension? Am I...
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    Tension in 4 strings suspending object at 4 different points

    Hi. I have upgraded the diagram according to your guidance. Link to diagram : https://imgur.com/a/LflI1 All points are measured with respect to origin at point A.(bottom left corner of grid) Mass of grid is 25kg. Gravity is 9.8m/s^2. I tried to calculate Tension using matrix and solving...
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    Tension in 4 strings suspending object at 4 different points

    What data is missing that would allow me to solve this problem? I would still require forces acting on the strings in x-y-z direction for that, right? That is what I am trying to figure.
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    Tension in 4 strings suspending object at 4 different points

    I think its not going to be as taut to be treated as a uniform flat plate unfortunately. This is how the original installation looked like. Though it won't be as loose as shown in image...
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    Tension in 4 strings suspending object at 4 different points

    Homework Statement A grid made of ropes is suspended by its four corners with strings tied to four different points on a building. Three of which are fixed and fourth is attached to a pulley which is in turn fixed to the building. Given data : Grid mass is 25 kilogram suspended at a height of...