# PHYSICS

What major obstacle did Henry Cavendish face when measuring the gravitational force between two objects on Earth?

A) The masses required had to be very small.

B) The gravitational force between the two masses
was very small.

C) The distance between the two masses had to be
extremely large.

D) The gravitational force between the two masses
was extremely large.

1. 0
2. 1
1. B) The gravitational force between the two masses was very small.

posted by Elena
2. can u pls explain to me y is it the and B)
....thank you very much elena .... :-)

posted by myra
3. Gravitational force is F=G•m1•m2/R²,
where the gravitational constant G = 6.67•10^-11 N•m²/kg².
This constant is very small, therefore, the gravitational interaction between usual objects is very small too.

posted by Elena

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