natjojo0512
07.07.2019 •
Physics
Give two examples of common force fields and name the sources of these fields.
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Ответ:
Ответ:
Explanation:
Assume the sphere has a volume of 1 m³ and the water is fresh.
It displaces 1 m³ of water with mass of 1000 kg
If m is the mass of the sphere, then balancing forces on the sphere gives us
downward forces of
mg + mg/3
and upward buoyancy force of 1000g N which is the weight of the water displaced.
(4/3)mg = 1000g
(4/3)m = 1000
m = 750 kg
ρ = 750 kg/m³