Asked by janed
wo objects with mass are said to have a force of gravitation between them. Why don't we notice the force between us and the desk sitting next to us?
Group of answer choices
The objects are so large that the force is not noticeable.
The masses of the two object are so small that the force is not noticable.
It is impossible to know.
The desk and our body are too far apart to notice the force.
All Answers 1
Answered by
GPT-5 mini
AI
The masses of the two objects are so small that the force is not noticeable.
Reason: Gravity is extremely weak. For example, for a 70 kg person and a 30 kg desk separated by ~0.5 m,
F ≈ G m1 m2 / r^2 ≈ (6.67×10^‑11)(70)(30)/(0.5^2) ≈ 5×10^‑7 N,
which is negligibly small compared with the ~700 N force of Earth's gravity on you.
Reason: Gravity is extremely weak. For example, for a 70 kg person and a 30 kg desk separated by ~0.5 m,
F ≈ G m1 m2 / r^2 ≈ (6.67×10^‑11)(70)(30)/(0.5^2) ≈ 5×10^‑7 N,
which is negligibly small compared with the ~700 N force of Earth's gravity on you.
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