The spring balance A reads 2 kg with a block | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) When the block $m$ is suspended in air,the reading of spring balance $A$ is equal to the weight of the block,$T = mg = 2 \ kgf$.When the block is

Vedclass · Accepted Answer

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

Vedclass · Answer

(C) When the block $m$ is suspended in air,the reading of spring balance $A$ is equal to the weight of the block,$T = mg = 2 \ kgf$.When the block is immersed in the liquid,an upward buoyant force $F_B$ acts on the block. The new tension in the spring $A$ becomes $T' = mg - F_B$. Since $F_B > 0$,$T' According to Newton's third law,the block exerts an equal and opposite downward force $F_B$ on the liquid. This force is transmitted to the beaker and consequently to the pan of balance $B$. Thus,the new reading of balance $B$ becomes $W_{beaker+liquid} + F_B$. Since $F_B > 0$,the reading of balance $B$ will be more than $5 \ kg$.

Similar Questions

If the momentum of an electron is changed by $\Delta p$,then the de-Broglie wavelength associated with it changes by $0.50\%$. The initial momentum of the electron will be

Which among the following reactions will take place spontaneously?

Four successive members of the first series of the transition metals are listed below. For which one of them is the standard electrode potential $(E^o_{M^{2+}/M})$ value positive?

Two identical capacitors have the same capacitance $C$. One of them is charged to a potential $V_1$ and the other to $V_2$. The negative ends of the capacitors are connected together. When the positive ends are also connected,the decrease in energy of the combined system is

Vedclass Test Series

Exam Paper Generator

Online Exam Module