No. Efficiency is always less than 100% for any real machine due to the second law of thermodynamics. Perpetual motion machines (which would have efficiency > 100%) are impossible.
Answer: Increasing friction lowers the efficiency because more input work is wasted overcoming the friction rather than doing useful work. How to Effectively Use PDF Answer Keys a full 20-question practice test
Understanding Section 14.3: Mechanical Advantage and Efficiency (Answer Key PDF Resource Guide) a full 20-question practice test
Download our companion PDF cheat sheet (link below) containing all formulas, a full 20-question practice test, and a step-by-step answer guide for Section 14.3. a full 20-question practice test
No. Efficiency is always less than 100% for any real machine due to the second law of thermodynamics. Perpetual motion machines (which would have efficiency > 100%) are impossible.
Answer: Increasing friction lowers the efficiency because more input work is wasted overcoming the friction rather than doing useful work. How to Effectively Use PDF Answer Keys
Understanding Section 14.3: Mechanical Advantage and Efficiency (Answer Key PDF Resource Guide)
Download our companion PDF cheat sheet (link below) containing all formulas, a full 20-question practice test, and a step-by-step answer guide for Section 14.3.
