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10 March, 21:18

A book with a mass of 1.2 kg sits on a bookshelf. If it has a gravitational

potential energy of 50 J, how high is the shelf? The acceleration of gravity is

9.8 m/s2

A. 1.2 m

B. 4.3 m

C. 5.9

D. 2.7 m

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Answers (1)
  1. 10 March, 21:26
    0
    I'm sorry, I just saw this. I hope I'm not too late.

    GPE = mass * gravity * height

    height = GPE / (mass * gravity)

    height = 50 / (1/2 * 9.8)

    height = 10.2041 Meters
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