Asked by Carden
Catching a wave, a 65 kg surfer starts with a speed of 1.3 m/s, drops through a height of 2.10 m, and ends with a speed of 8.2 m/s. How much nonconservative work was done on the surfer?
I have genuinely no idea how to solve this problem.
I have genuinely no idea how to solve this problem.
Answers
Answered by
bobpursley
Initial PE+change in PE-KE=nonconservative work.
If you have no idea how to do these, you need a tutor.
At the college bookstore, or BarnesNoble, Schaum's Outline Series College Physics (or similar in the series) are very excellent on problems.
If you have no idea how to do these, you need a tutor.
At the college bookstore, or BarnesNoble, Schaum's Outline Series College Physics (or similar in the series) are very excellent on problems.
Answered by
Carden
1) my teacher is really bad.
2) Is delta potential energy = mgvf - mgvi
2) Is delta potential energy = mgvf - mgvi
Answered by
bobpursley
initial energy= 1/2*65*1.3^2
added energy= 65*9.8*2.1
add those.
subtract finalke=1/2 65*8.2^2
the remainer is the work done.
added energy= 65*9.8*2.1
add those.
subtract finalke=1/2 65*8.2^2
the remainer is the work done.
Answered by
Carden
Thank you, I understand that now.
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