Tuesday
July 7, 2015

Homework Help: physics

Posted by april on Saturday, January 31, 2009 at 10:52am.

a 200 kg block was moved along an inclined plane to a height of 10m. during this process 3000J of energy was lost due to friction.

a. calculate the efficiency of the inclined plane.

b. what would the efficiency of the simple machine be if the incline were frictionless?

c. how would the efficiency of the inclined plane change (decrease or increase or no change) if the incline were longer with no change in height? Hint: consider change of work due to friction.

please explain more than just giving me an equation.

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