Two bodies A ( 30 kg) and B( 50 kg) tied with a light starting are placed on a frictionless table. A force F acting at B pulls this system with an acceleration of $2 m s^{- 2}$ . The tension in the string is:

60

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100

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35

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140

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Solution

The correct option is A $60$ N
$\begin{matrix} T_{1} = F T_{1} = m_{1} a T_{1} - T = m_{2} a 50 \times 2 - T = 30 \times 2 T = 60 N \end{matrix}$
Hence,
option $(A)$ is correct answer.

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Two bodies A ( 30 kg) and B( 50 kg) tied with a light starting are placed on a frictionless table. A force F acting at B pulls this system with an acceleration of 2ms−2. The tension in the string is:

The correct option is A 60 NT1=FT1=m1aT1−T=m2a50×2−T=30×2T=60NHence,option (A) is correct answer.

Two bodies A ( 30 kg) and B( 50 kg) tied with a light starting are placed on a frictionless table. A force F acting at B pulls this system with an acceleration of $2 m s^{- 2}$ . The tension in the string is:

The correct option is A $60$ N
$\begin{matrix} T_{1} = F T_{1} = m_{1} a T_{1} - T = m_{2} a 50 \times 2 - T = 30 \times 2 T = 60 N \end{matrix}$
Hence,
option $(A)$ is correct answer.