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    In bouncing ball experiment, I measured time of contact with the ball and floor.

    Using I=Ft=mv-mu equation

    I can calculate how much force is exerted.

    Question is ....

    By knowing Force and time would I be able to calculate how much sound and heat is produced from collision between floor and ball ??

    What equation shall I use ??

    Could you suggest me any web site ???


    Oh, and how can I measure gravity without using time and velocity..
    my light gates doesnt seem to work at all.

    Thanks

    you guys have really dull coursework, no offence.
    i couldnt tell you
    im not sure what board you're with but i'll tell you only wat i know from my forces, fields exam we had in jan

    Speed of ball b4 impact: PE = mgh ( 1/2 mv2 )
    V2 = 2gh B = squareroot 2gh

    and average force during impact for a contact of time F = mv/t

    this probably wont help you whatsoever but whatever, if u want coursework for the specific heat capacity i'll give u myne

    bye.

    and to get gravity you can derive it from the 1st one
    i know 0 sites
    sorry
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    (Original post by DazYa)
    you guys have really dull coursework, no offence.
    i couldnt tell you
    Its actually boucing ball on inclined plane.
    well still piece of pi**. I admit.

    its only 1/6 of my A2 course and i dont want to spend much time trying to understand, choosing interesting and hard coursework.

    oh its Edexcel btw.

    see ya
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    don't know whether they allow to use other method or not...

    seem there are so many ways to measure gravity...

    eg. using F=BIL is a goog way to find it without t & v.
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    & always accept the idea of conservation of energy

    1/2mv^2 + energy lost = mgh

    BTW: Is there any method can directly calculate the energy of sound ?

    F = BIL only applies to electromagnetic conduction and the like i think, but i guess u cud try.. or fit equations into equations

    and if u wanan get the gravity then u can do g = F/M which can also be as G Ms Me
    ---------
    (Re + h )2 Ms

    the Ms cancel out which gives
    G Me
    -------
    (Re + h )2

    G = constant
    Me = mass of earth
    Re = radii of earth
    h = height

    g = G m / r2
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    (Original post by DazYa)
    and if u wanan get the gravity then u can do g = F/M which can also be as G Ms Me
    ---------
    (Re + h )2 Ms

    the Ms cancel out which gives
    G Me
    -------
    (Re + h )2

    G = constant
    Me = mass of earth
    Re = radii of earth
    h = height

    g = G m / r2
    what a fun in using this formula to solve out the gravity...
    a bit of error will cause you die in no doubt...
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    & I am not sure whether it is right to omit the smaller mass particle in this way... :confused:

    yep so u can jst use Mass of ball, Radii of ball,then get ur answer dat way
    there was a similar situation in the exam .....whereby you CAN use the equation and apply it to a ball cuz the ball is sstill a body
    but yueah its not gonna be perfect :P
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    Not to forget the coefficient of friction. Ie when ball hits ground, it lioses energy.
    and its a constant is "e"

    ie. V1 = eV1

    Where V1 is the speed at wich it falls on ground.
 
 
 

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