Torater
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gneil does this work for problems with inclines as well?? I have posted a question with an incline, if this trick works for that too that is very handy!
Analyzing Rotational Work and Energy Using Newton's Laws
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Torater
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Ok take a look at my problem that has incline in the heading Ill go try it right now with this trick!
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Please remember that the question (particularly if it says "use Newton's laws") may not allow you to use this short-cut … so check with your professor. 
However, even if you're not allowed, it's a very quick way of checking your answer (and very useful if your arithmetic sometimes goes wrong!
)
However, even if you're not allowed, it's a very quick way of checking your answer (and very useful if your arithmetic sometimes goes wrong!
)
Torater
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ya i'll have to do it the other way because it specifies using Newtons laws but I can confirm I didn't mess up my algebra by this handy method!