A stone tied to a thread is hanged from the hook of a spring balance. The stone is gradually immersed in the water contained in a jar. What changes do you observe in the reading of the spring balance?

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Solution

When the stone is gradually immersed in water, it experiences an upthrust.
The reading of the spring balance decreases up to the point the object is fully immersed. The reading thus shows the apparent weight of the stone which is less than the actual weight.

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A stone tied to a thread is hanged from the hook of a spring balance. The stone is gradually immersed in the water contained in a jar. What changes do you observe in the reading of the spring balance?

When the stone is gradually immersed in water, it experiences an upthrust. The reading of the spring balance decreases up to the point the object is fully immersed. The reading thus shows the apparent weight of the stone which is less than the actual weight.

When the stone is gradually immersed in water, it experiences an upthrust.
The reading of the spring balance decreases up to the point the object is fully immersed. The reading thus shows the apparent weight of the stone which is less than the actual weight.