aDVnatgae Posted December 22, 2011 Report Share Posted December 22, 2011 Take a look at the file that I have attached. Is it possible to figure out the ratio for all 3? How can you find Force of friction? and Egained (energy gained)? Reply Link to post Share on other sites More sharing options...
Award Winning Boss Posted December 22, 2011 Report Share Posted December 22, 2011 I won't lie i almost broke my neck reading that, is there no way you can rotate it ? Reply Link to post Share on other sites More sharing options...
aDVnatgae Posted December 22, 2011 Author Report Share Posted December 22, 2011 (edited) http://dl.dropbox.com/u/7509061/WP_000418.jpg Edited December 22, 2011 by aDVnatgae Reply Link to post Share on other sites More sharing options...
aDVnatgae Posted December 22, 2011 Author Report Share Posted December 22, 2011 Is it possible to figure out the ratio for all 3? I calculate efficiency. Are the steps right and I dont know how to calculate the force of friction? This is the value I got for Trial 1: F (load) = 50 N this weight goes at the bottom of the pulley Y (load) = 0.13 m F (applied) = 30 N this weight is the applied weight Y (applied force) = 0.33 m *** Y are the distance travelled by the load and appied force W (load) = 50*0.13 = 6.5 J W (appilied/effort) = 30*0.33 = 9.9 J Efficiency = (6.5/9.9)*100 Is this right so far? How to calculate force of friction? Reply Link to post Share on other sites More sharing options...
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