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.

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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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