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25 September, 06:28

13. Which of the following pairs of objects would have the greatest attraction toward each other due to gravity?

a. a 10 kg object and a 10 kg object,

4 m apart

b. a 5 kg object and a 5 kg object,

4 m apart

c. a 10 kg object and a 10 kg object,

2 m apart

d. a 5 kg object and a 5 kg object,

2 m apart

+2
Answers (1)
  1. 25 September, 08:22
    0
    Answer: c

    Explanation:

    First calculate gravitational force between objects

    a) Fg=γ*m1m2/r²

    m1=m2=10kg

    r=4m

    Fg=γ * 100kg²/16m²

    Fg=6.25γ

    b) Fg=γ*m1m2/r²

    m1=m2=5kg

    r=4m

    Fg=γ*25m²/16m²

    Fg=γ*1.56

    c) m1=m2=10kg

    r=2m

    Fg=γ100kg²/4m²

    Fg=γ25

    d) m1=m2=5kg

    r=2m

    Fg = γ25kg²/4kg

    Fg=γ6.25
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