If potential energy at point A is 12 joules, what is the potential energy at D? P.E. = 2.4 2 3

Question

If potential energy at point A is 12 joules, what is the potential energy at D?

P.E. = 2.4
2
3

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Thái Dương 5 years 2021-08-23T12:16:08+00:00 1 Answers 10 views 0

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  1. RuslanHeatt
    0
    2021-08-23T12:18:07+00:00
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    Answer:

    In D: 3J

    Explanation:

    Potential energy: Ep=mgh where m is the mass, h altitude.

    In point A: h=20cm=0.2m

    Epa=12=0.2×mg. Thus mg=12/0.2=60N

    For point D: hd=5cm=0.05m

    Epd=mg×0.05=60×0.05=3J

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