Physics Review Question

Unit: type the regents category here
Year: 1990 Question#: 20
Question: When a 5-kilogram mass is lifted from the ground to a height of 10 meters, the gravitational potential energy of the mass is increased by approximately

(1 ) 0.5 J
(2 ) 2 J
(3 ) 50 J
(4 ) 500 J

What is this question really asking?


Explanation by: Danny A

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Answer 1
0.5 J

INCORRECT

This is totally the wrong answer, you used the wrong equation, the right equation for this problem is GPE= mgh return to top























Answer 2
2 J

INCORRECT

Try using the formula GPE = mgh return to top



























Answer 3
50 J

INCORRECT

This answer is wrong because you forgot to multiply by the height or the acceleration do to gravity which are both the same value in theis question (10).
Try GPE = mgh return to top


























Answer 4
500 J

CORRECT

This answer is correct. To work this problem out you would use GPE=mgh.  return to top


























What's this question really asking?

At 10 meters high (above a the lowest point) how much GPE does a 5-kilogram mass have?. return to top

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