Physics homework is pretty craptastic – PART THREE. Help?
15) In what way is a machine subject to the law of energy conservation? Is it possible for a machine to multiply energy or work input?
16) What does it mean to say that a machine has certain mechanical advantages?
17) In which type of lever is the output force smaller than the input force?
18) What is the efficiency of a machine that requires 100J of input energy to do 35J of work?
19) Distinguish between theoretical mechanical advantage and actual mechanical advantage. How would these compare if a machine were 100% efficient?
20) What is the efficiency of his body when a cyclist expends 1000W of power to deliver mechanical energy to the bicycle at the rate of 100W?
Favorite Answer
If you want help, it might be better to show your work so people know you’ve tried! Also, then if it’s wrong, you can be shown how to correct it.
EDIT: Sorry, don’t buy into your “additional details” at all. You could have split them up and shown your work! You didn’t ask for help and explanations! You simply posted the questions! I find it interesting that out of “100” you only post the first 20 and “did” the last 80. Things that make you go “hmmmm”. And, I don’t give a rats about getting violations or thumbs down either, I call them as I see them and if you don’t want us to see them as cheating then POST YOUR WORK!
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