Posted by Brittany on Saturday, November 14, 2009 at 3:22pm.
eff=workout/workin = 4*100/500 * 100=80percent
The force of gravtitation between two objects is 500 Newtons. What would the force of gravitation be if the distance between these to objects increased by 10 times?
10kg*9.81m/s^2=98.1N*4m=392.4J
392.4J/500=78.48% efficiency
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