Spring balance A reads 2, kg with a block m suspended from it. A balance B reads 5 ,kg when a beaker

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9-1.Fluid Mechanics

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The spring balance $A$ reads $2\, kg$ with a block m suspended from it. $A $ balance $B$ reads $5 \,kg $ when a beaker filled with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid as shown in figure. In this situation

The balance $A$ will read more than $2\, kg$

The balance $B$ will read more than $5 \,kg$

The balance $A$ will read less than $2\, kg$ and $B$ will read more than $5\, kg$

Both $(b)$ and $(c)$

(IIT-1985)

Solution

(d) Force of upthrust will be there on mass m shown in figure, so $A$ weighs less than $2 \,kg$. Balance will show sum of load of beaker and reaction of upthrust so it reads more than $5 \,kg$.

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The spring balance $A$ reads $2\, kg$ with a block m suspended from it. $A $ balance $B$ reads $5 \,kg $ when a beaker filled with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid as shown in figure. In this situation

Solution

Similar Questions

Determine the equation for the volume of body’s partially part immersed in a fluid for the floating body.

A cubical block of side $0.5\,m$ floats on water with $30\%$ of its volume under water. ……. $kg$ is the maximum weight that can be put on the block without fully submerging it under water ? [Take density of water $= 10^3\,kg/m^3$ ]

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