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    i believe i wrote it in an earlier post with the density with correct units. i hadnt but owel here it is :P.

    (((4/3)x(pi))x(0.95x10^-2)^3)x0.92x10^3x9.8 = 0.03237973784
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    (Original post by candiedmango)
    i believe i wrote it in an earlier post with the density with correct units. i hadnt but owel here it is :P.

    (((4/3)x(pi))x(0.95x10^-2)^3)x0.92x10^3x9.8 = 0.03237973784
    This is correct.

    Weight is greater than this. The ball should sink, experiment's consistent with theory.
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    the weight isnt greater though. the weight is 0.02798 and U is 0.03238
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    (Original post by candiedmango)
    the weight isnt greater though. the weight is 0.02798 and U is 0.03238
    Weight is (mass)x(gravitational acceleration). 0.028 kg is mass, not weight.
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    thank you for the helped i figured that out later on :P. tired error i guess :L.can you help me again?
    what would my units be now for W-U=F and then F/6(pi)rv= coeffecient of viscosity. i need the units for the coefficient manly . thanks
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    (Original post by candiedmango)
    thank you for the helped i figured that out later on :P. tired error i guess :L.can you help me again?
    what would my units be now for W-U=F and then F/6(pi)rv= coeffecient of viscosity. i need the units for the coefficient manly . thanks
    Forces are in newtons, \mathrm{N=kg\cdot m/s^2}. The units of coefficient of viscosity is \mathrm{N/(m\cdot m/s)} (because \eta=F/6\pi rv).
 
 
 
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