Exercise
Form 11: Apparent Weight and Buoyancy Calculations
In this exercise, students will explore the concepts of apparent weight and buoyancy by conducting hands-on experiments with various objects submerged in water, allowing them to calculate the forces at play and deepen their understanding of fluid mechanics. By analyzing real-world scenarios, learners will enhance their problem-solving skills while connecting theoretical physics to everyday experiences.
Questions
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MultiChoice
An object weighs 30 N in air and 10 N when submerged in water. What is the buoyant force?
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MultiChoice
A metal block weighs 50 N in air. In water, it experiences a 15 N buoyant force. What is its apparent weight in water?
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MultiChoice
A stone has an apparent weight of 8 N when submerged in water. If the buoyant force is 4 N, what is its weight in air?
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MultiChoice
A floating boat weighs 100 N. What is its apparent weight as registered on a spring scale?
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MultiChoice
A brass mass weighs 20 N in air and 18 N in water. What is the buoyant force acting on it?
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MultiChoice
How is apparent weight in a fluid calculated?
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MultiChoice
A 70 N crown is submerged in water and has an apparent weight of 30 N. Find the buoyant force.
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MultiChoice
Why does an object weigh less in dense saltwater than in freshwater?
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MultiChoice
An anchor weighs 100 N in air. In sea water, the buoyant force is 40 N. What is its apparent weight?
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MultiChoice
A rock displaces 0.5 kg of water (weight = 5 N). What is the loss of weight experienced by the rock?
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MultiChoice
A sculpture weighs 11 N in air and 5 N submerged in oil. What is the buoyant force exerted by the oil?
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MultiChoice
Once a solid rock is completely submerged underwater, as it sinks deeper (ignoring compression), the buoyant force: