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Q.

A string is holding a solid block below the surface of a liquid. The density of liquid is greater than that of solid. The tension in the string is T, when the system is at rest; what will be the tension in the string when the system has upward acceleration a                                                      Question Image

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a

T0[1+ag]

b

T0[1+ga]

c

[1+ag]T02

d

T0[1ga]

answer is C.

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Detailed Solution

Tension in the string = upward thrust – weight of the body

T0=vg(ρ1ρ)

T=v(a+g)(ρ1ρ)

=vg(1+ag)(ρ1ρ)

T=T0(1+ag)

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A string is holding a solid block below the surface of a liquid. The density of liquid is greater than that of solid. The tension in the string is T, when the system is at rest; what will be the tension in the string when the system has upward acceleration a