Weight of a cruise ship?

Classical Mechanics Level 2

A cruise ship or cruise liner is a passenger ship used for pleasure voyages, where the voyage itself and the ship's amenities are a part of the experience, as well as the different destinations along the way. If the weight of the cruise ship that is floating on the ocean as above is 2 × 1 0 9 2 \times 10^9 N and the gravitational acceleration is 9.8 m / sec 2 9.8 \text{m}/\text{sec}^2 , then what is the magnitude of buoyancy?

2 × 1 0 9 2 \times 10^9 N 2.04 × 1 0 8 2.04 \times 10^8 N 19.6 × 1 0 9 19.6 \times 10^9 N 2 × 1 0 8 2 \times 10^8 N

Lakshan Dumpa by Lakshan Dumpa , 24, India

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7 solutions

Simran Singh
Mar 26, 2014

According to the principle of floatation weight of the floating body=weight of the liquid displaced by it ( that is , upthrust)

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Anom Ahmed
Mar 15, 2014

buoyancy is the measure of upward force on the ship by water ..... as the the ship is completely floating we can assume the buoyancy to be same as its weight........ otherwise it would sink like TITANIC or become a spacecraft.....

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Vivek Singh
Mar 14, 2014

According to Archimede's principle, buoyancy force = weight of flowing ship

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Gauri Parab
Mar 14, 2014

As the ship is floating, according to Archimedes' principle, Buoyant Force = Weight of the floating object.

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Lira Zabin
Mar 14, 2014

bouyant force =weight of boat

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Asif Iqbal
Mar 10, 2014

the weight of the boat=bouyant force

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Shubhendra Singh
Mar 10, 2014

since the boat is floating so the weight of the boat=bouyant force

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I believe the weight of the water displaced is the buoyant force. also the problem itself is not complete as some crucial data is missing.

soumyadeep kundu - 7 years, 3 months ago

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no dude! actually it is just the upward force experienced by the object ! if the object is immersed in water buoyancy is found to be equal to the weight of the volume of displaced water!

Mayank Holmes - 7 years, 1 month ago

Owh, Good ! haha

Cahyo Saputro - 7 years, 3 months ago

As buoyancy force is the force applied by the water on a floating body which is equal to the weight of the part of body floating above the water level. Here as total ship is above the water level, so buoyancy force is equal to the weight of the ship.

Sathi Nagi Reddy - 7 years, 3 months ago

wrong answer! if buoyancy would have been equal to the weight of the object it is rendered suspended! I mean suspended just below the surface! for the object to float it is essential that the buoyant force is more than the weight of the object!

Mayank Holmes - 7 years, 1 month ago

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