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What is the buoyant force on a .2 Liter, 1.6 kg metal donut fully submerged in...

What is the buoyant force on a .2 Liter, 1.6 kg metal donut fully submerged in water (1kg per liter)?

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Answer #1

According to Archimede's principle, the buoyant force is given by = weight of fluid displaced by object

= Weight of water displaced by donut

= g * volume of water displaced by donut.....(1)

= density of water = 1 kg/litre

For fully submerged, volume of water displaced by donut = volume of donut

Thus, from equation (1)

Buoyant force = ​​​​​​g* volume of donut

= 1 * 9.81 * 0.2 = 1.962 N

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