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Marbles dropped into a partially filled bathtub sink to

Chapter 11, Problem 31

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QUESTION:

Problem 31CQ

Marbles dropped into a partially filled bathtub sink to the bottom. Part of their weight is supported by buoyant force, yet the downward force on the bottom of the tub increases by exactly the weight of the marbles. Explain why.

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QUESTION:

Problem 31CQ

Marbles dropped into a partially filled bathtub sink to the bottom. Part of their weight is supported by buoyant force, yet the downward force on the bottom of the tub increases by exactly the weight of the marbles. Explain why.

ANSWER:

Step 1 of 2:

Consider the marbles are dropped into a half-filled bathtub and they sink to the bottom. While sinking down to the bottom, the marbles experience many forces. They are a viscous force, buoyant force and weight. The weight is balanced by the buoyant force and the viscous force. They are upward in direction. Finally, the marbles reach the bottom of the tub.

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