Question

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​

Answer 1

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