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Work/Energy physics problem

  • Thread starter Jason03
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Answers and Replies

  • #2
alphysicist
Homework Helper
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Hi Jason03,

The term you have for the gravitational energy is not correct. Do you see why?

(I think you might also want to recalculate the frictional work term.)
 
  • #3
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For gravitational energy do you mean the mgh on the right side of the equation?....I have mgx which could be a problem but im not sure.



And for frictional work U 1-2 = -Friction*distance

so I did Kinetic Friction * Normal Force * distance x
 
  • #4
CompuChip
Science Advisor
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For gravitational energy do you mean the mgh on the right side of the equation?....I have mgx which could be a problem but im not sure.
What is the h in that equation, and what does the x you have represent? How can you write h in terms of x?
 
  • #5
161
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i just did h = x sin 25 and I came up with x = 2.3 and the book has x = 2.28

so now i have to figure the velocity and total frictional work
 
  • #6
161
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got it all figured out...thanks for the help!
 

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