Physics Review Question Unit: Mechanics Year: 1997 Question#: 18 Question: A spring has a spring constant of 120 newtons per meters. How much potential energy is stored in the sping as it is streched 0.20 meters? (1 ) 2.4 J (2 ) 4.8 J (3 ) 12 J (4 ) 24 J What is this question really asking? Explanation by: Chris B. [ Return to question menu ] Answer 1 2.4 J CORRECT for this problem you must do problem out, and them see which is correct answer. is the correct equation. PE=1/2(120n)(.4) PE=2.4J. From here you see that this is the correct answer. return to top Answer 2 4.8 INCORRECT Looks like you forgot about the 1/2 term in the formula return to top Answer 3 12J INCORRECT Try this formula return to top Answer 4 24J INCORRECT Try this formula return to top What's this question really asking? How much Energy does the spring have as a result of being stretched? return to top |
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