(A) Let the mass of the lower block be $m_2 = 4\,kg$ and the upper block be $m_1 = 2\,kg$. The acceleration is $a = 2\,m/s^2$ upwards.For the lower bl

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$T = 70.8\,N$ and $T' = 47.2\,N$

(A) Let the mass of the lower block be $m_2 = 4\,kg$ and the upper block be $m_1 = 2\,kg$. The acceleration is $a = 2\,m/s^2$ upwards.For the lower block $(4\,kg)$:The forces acting are tension $T'$ upwards and weight $m_2g$ downwards.Using Newton's second law: $T' - m_2g = m_2a$$T' - 4 \times 9.8 = 4 \times 2$$T' - 39.2 = 8$$T' = 47.2\,N$For the upper block $(2\,kg)$:The forces acting are tension $T$ upwards,tension $T'$ downwards,and weight $m_1g$ downwards.Using Newton's second law: $T - T' - m_1g = m_1a$$T - 47.2 - 2 \times 9.8 = 2 \times 2$$T - 47.2 - 19.6 = 4$$T - 66.8 = 4$$T = 70.8\,N$

Class 11 Physics Laws of Motion Tension Force and Pulley Block System

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Two blocks are connected by a string as shown in the diagram. The upper block is hung by another string. $A$ force $F$ applied on the upper string produces an acceleration of $2\,m/s^2$ in the upward direction in both the blocks. If $T$ and $T'$ are the tensions in the two parts of the string,then $T$ and $T'$ are:

A
$T = 70.8\,N$ and $T' = 47.2\,N$
B
$T = 58.8\,N$ and $T' = 47.2\,N$
C
$T = 70.8\,N$ and $T' = 58.8\,N$
D
$T = 70.8\,N$ and $T' = 0$

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Tension Force and Pulley Block System

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MediumMHT CET 2024

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In the arrangement shown in the figure, the work done by the string on the block of mass $0.36 \,kg$ during the first second after the blocks are released from a state of rest is: (Ignore friction and the mass of the string.)
(Acceleration due to gravity, $g = 10 \,m/s^2$) (in $\,J$)

DifficultAP EAMCET 2019

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$A$ body of mass $m$ is allowed to fall with the help of a string with downward acceleration $\frac{g}{6}$ to a distance $x$. The work done by the string is .............

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$A$ weight $W$ can be hung in any of the following four ways by a string of the same type. In which case is the string most likely to break?

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In the arrangement shown in the figure, the work done by the string on the block of mass $0.36 \,kg$ during the first second after the blocks are released from a state of rest is: (Ignore friction and the mass of the string.)(Acceleration due to gravity, $g = 10 \,m/s^2$) (in $\,J$)

$A$ body of mass $m$ is allowed to fall with the help of a string with downward acceleration $\frac{g}{6}$ to a distance $x$. The work done by the string is .............

$A$ weight $W$ can be hung in any of the following four ways by a string of the same type. In which case is the string most likely to break?

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In the arrangement shown in the figure, the work done by the string on the block of mass $0.36 \,kg$ during the first second after the blocks are released from a state of rest is: (Ignore friction and the mass of the string.)
(Acceleration due to gravity, $g = 10 \,m/s^2$) (in $\,J$)