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  • Maths problem
  • tiggs121
    Free Member

    T1cos 30o + T2cos 80o = 700

    Find T1 and T2

    It’s a forces problem

    beej
    Full Member

    Army, Navy or RAF?

    blahblahblah
    Free Member

    1 equation. 2 unknowns.

    Can’t be solved without additional information.

    perchypanther
    Free Member

    t1= CBA
    t2=DILLIGAF

    Do I win five pounds?

    euain
    Full Member

    You need another constraint, surely? There must be something else in the problem giving you an expression in T1 and/or T2.

    adamhicks
    Free Member

    Is this something being suspended by two ropes at an angle?

    In which case you have solved for vertical equilibrium by stating the vertical components from the tension in the rope is equal to the weight of whatever is being supported.

    The second equation should be for horizontal equilibrium – if the object is not moving then there is no overall horizontal force so

    T1sin60=T2sin80

    PlopNofear
    Free Member
    tiggs121
    Free Member

    W = 700N

    What is the tension in each rope. Not to be solved graphically.

    euain
    Full Member

    Your other constraint is T1.Sin(15) – T2.Cos(10) = 0 (she’s not accelerating left or right).

    Just substitute T2=T1.Sin(15)/Cos(10) into the first equation – and solve for T1 (though I think the angles are different in the illustration and your original example?)

    40mpg
    Full Member

    Where’s Bruneep? He’ll know this one, although I’m sure thats not standard operating procedure 😀

    adamhicks
    Free Member

    Check your angles are labelled in the same place as the diagram. Euains equation is correct, but if you angles are labelled in the same position then your initial equation is wrong as one of the angles is measured to the horizontal and one is measured to the vertical.

    MSP
    Full Member

    Unfortunately before I solved the equation the flames burnt through the rope and the poor lady plunged to her death.

    So the problem changes and the solution now becomes “time for a cup of tea”.

    bruneep
    Full Member

    Tell the cage operator to move closer and stop dicking about

    dirtyrider
    Free Member

    😆

    maccruiskeen
    Full Member

    Where’s Bruneep? He’ll know this one,

    He’s down below and has deduced ‘T1’ is ‘collar’ and ‘T2’ is ‘cuffs’ and that they both match.

    bruneep
    Full Member

    Our wedding is in 2 months all welcome

    edward2000
    Free Member

    Erm…. Why?

    bruneep
    Full Member

    because I saved her life and she loves me for ever. Its an occupational hazard, ladies throwing themselves at me.

Viewing 18 posts - 1 through 18 (of 18 total)

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