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In one hand you hold a .12-kg apple, in the other hand a .20-kg orange. The apple

and orange are separated by .75 m. What is the magnitude of the force of gravity that

Athe orange exerts on the apple?
Bthe apple exerts on the orange?

Verified Answer :

AL2006

Forces of gravity between two masses = G M₁ M₂ / R²

G = universal gravitational constant =   6.67 x 10⁻¹¹  N-m² / kg²

F = (6.67 x 10⁻¹¹) (0.12) (0.20) / (0.75)²

F = 2.85 x 10⁻¹² Newton    (about  0.000 000 000 01 ounce)

The gravitational forces are always the same in both directions.
(Your weight on the Earth is the same as the Earth's weight on you.)

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