Recent content by radaway

  1. radaway

    Moments and force -- Forces on a cantilever hole punch

    How about -- 40*(5+1.1)=(2f)*1.1 , thus f=... N.
  2. radaway

    Moments and force -- Forces on a cantilever hole punch

    <What about the two in the number of holes> umm.. the perforater did what it normally needs to do. punch in 2 holes at the same time. did you mean , I multiply the r.h.s of the equation with '2' ?
  3. radaway

    Moments and Force: Calculating Distance and Mass of a Caravan

    Homework Statement see the image of the caravan .if it is attached to a car, the caravan according to the safety regulations should exert a force of 690 N (6,9x 100 N) exerting downward on the car's tow hitch. Before the person fastens the caravan, he checks the magnitude of the force by...
  4. radaway

    Moments and force -- Forces on a cantilever hole punch

    Homework Statement sam makes a punch hole with the perforater( two holes ). She presses the lever at A down with a force of 40 N. Calculate the total force which a single pin presses on the paper. Homework Equations http://s6.postimg.org/yx62wbild/image.png The Attempt at a Solution would it...
  5. radaway

    Formula to detect direct or inverse related values

    thanks that helped abit for the records: slope = change in Y/ chg. in x 10/4, 20/8, 40/16 all amount to : 2.5 , the query now remains: where is the '1' coming from (2.5x +'1')
  6. radaway

    Formula to detect direct or inverse related values

    yes a calculator is allowed. I have a casio fx-82es plus, but would not know how to
  7. radaway

    Formula to detect direct or inverse related values

    No this is not a straight line.{ (y = cx ), where c is a constant} neither is this of the format y = c/x or x = c/y i think its an odd one out ( maybe a hyperbola, or an asymptote ...not sure.) all that's given is what I have shown in the picture file. and the instruction is : get the...
  8. radaway

    Formula to detect direct or inverse related values

    Homework Statement Hello All via the following x, y values , a formula needs to be decided for the 'Y ' variable. Basicaly Consider the table below for x and y (are they directly proportional or are they inversely related ? ). and also to find out the corresponding formula. Pl. see the...
  9. radaway

    Why does it say no questions ?

    and Now for a proper Introduction :) I am 47 years , working in the IT sector in the Netherlands. I have twins (14 yrs old) they are in the 'science stream' of their school. what I see is, at school, the teachers do not take 'enough pains' to explain the rudiments to a class of 30 pupils...
  10. radaway

    Why does it say no questions ?

    Thank you Mentor ! most of the times I am able to help and show them what needs to be done, but @ times I get foxed too ( its around 33-34 years that I last visited the topics). Mind's a little rusty with age now :) YES, I will abide by the guidelines you mentioned & thanks for easing it out...
  11. radaway

    Why does it say no questions ?

    Hi All I am new here , the very 1st time. I have 2 kids: 14 yrs old, and at times they come to me for finding solutions to their Math and physics school issue. I try to help him, but at times I too am foxed and and would like to vent my queries to someone.so I searched this forum. But this...
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