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course Phy 231
I wasn't sure if you want the who lab report so i just showed my work on finding the frictional force.7/23/10
You still have an error in finding your frictional force, which I believe should be .0012 N (see my note to that effect).
Your information
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4, 10,.013J, .008J, .013J,.0052J
4, 20, .025J, .016J, .023J, .0092J
4, 30, .037J, .024J, .035J, .014J
This is the 3 trials to the right off the ledge, 4 dominos, followed by distance in cm, PE lost, frictional, translational KE, and rotational KE.
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looks good except for the work done against friction, which will be modified.
This should modify some of the results in your last insertion
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I now took 2.432cm/s^2 loss in acceleration and .1kg of the ball
.1kg*.02432m/s^2=.0024N approx divide that by 2 for friction up and down the ramp .0012N approx.
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GOod. This affects one of the columns of your table (work done against friction). It should just take you a couple of minutes to modify those three quantities, document how you've changed them by giving a sample calculation of work against friction, and resubmit.
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