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#1 2010-06-09 22:05:08
- cathelyn13
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- Registered: 2009-07-18
- Posts: 10
Mechanics - Energy, work and power
The driving force exerted by D's engine is 4 times as great when D is at the top of the hill as it is when D is at the bottom. Find the ratio of the power developed by D's engine at the top of the hill to the power developed at the bottom.
Thanks in advance!! 
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#2 2010-06-26 00:49:39
- George,Y
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- Registered: 2006-03-12
- Posts: 1,379
Re: Mechanics - Energy, work and power
I guess it is a common trick that the power is the same for the same engine at its full power.
X'(y-Xβ)=0
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