Recent content by bluemoon

  1. B

    What is the efficiency of the engine?

    Okay for my first line, I got 24.5 and I don't know how I'm messing up on my second line. ??
  2. B

    What is the efficiency of the engine?

    Work done: 10kg*9.8N/kg*4=appx 400J efficience= work done/500 * 100
  3. B

    What is the efficiency of the engine?

    f an engine must do 500 joules of work to pull a 10 kg load up to a height of 4 meters, what is the efficiency of the engine? So that's 400/50,000 which gives me 0.008 Does that mean the efficiency is 8%?
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