1.A wooden block of mass m tied to a string is attached to bottom of a vessel containing water and it is fully immersedSelect answersAIf Buoyant force is equal to mg then T = mg BIf buoyant force is equal to mg then T = 0 CIf buoyant force = 2mg then T = mg DIf buoyant force = 2mg then T = 0
Question
1.A wooden block of mass m tied to a string is attached to bottom of a vessel containing water and it is fully immersedSelect answersAIf Buoyant force is equal to mg then T = mg BIf buoyant force is equal to mg then T = 0 CIf buoyant force = 2mg then T = mg DIf buoyant force = 2mg then T = 0
Solution
The correct answers are:
A. If Buoyant force is equal to mg then T = 0 D. If buoyant force = 2mg then T = 0
Here's why:
A. If the buoyant force is equal to the weight of the block (mg), then the tension in the string (T) would be zero because the block is not sinking or rising, it's in equilibrium.
D. If the buoyant force is twice the weight of the block (2mg), then the block would rise. However, since it's tied to the bottom of the vessel, it can't rise. Therefore, the tension in the string (T) would still be zero.
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