# Science

a)How much work is required to lift a 35-kg object from the ground 3.0 m into the air?

b) How much gravitational potential energy did this object gain?

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1. 35 * g = weight
weight * distance raised = work in

which is exactly the increase in potential energy

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posted by Damon
2. So 35 x 9.8 = 343 N

343 x 3.0 = 1029 J

Is that the answer to A or B, I'm a bit confused

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posted by Annie
3. yes.

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posted by DrBob222
4. or yes, yes :)

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posted by Damon
5. yes as in for A) or yes as in for B) o_O

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posted by Apesetic
6. That's what I'm thinking..

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posted by Annie
7. Just for clarity; yes for A and yes for B.

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posted by DrBob222
8. 343 N for A and 1029 J for B

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posted by Higming
9. 343 N for B and 1029 J for A

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posted by Higming
10. cxzx

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posted by xcxz
11. But where did you guys get the 9.8 from?

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posted by Student
12. Fg=M x g Is that right cause i am doing a test
=35 kg x 9.8N
=343N

343 x 3.0=1029J

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posted by Student
13. Not right now but it is on a review sheet for the test and the test is tomorrow

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posted by Student
14. So does a)343N and b)1029J
?????????????????????????????????????????????????????????????

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15. I figured it out thx for the help u guys

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