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Standard XII

Physics

Second Law of Motion

Two monkeys o...

Question

Two monkeys of masses $10 k g$ and $8 k g$ are moving along a vertical light rope, the former climbing up with an acceleration of $2 m / s^{2}$ when the latter coming down with a uniform velocity of $2 m / s$ Find tension in the rope at the fixed support

180 N

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200 N

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80 N

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216 N

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Solution

The correct option is B $200 N$
Tension due to monkey on $A = m (g + a)$
$10 (10 + 2) = 120 N$
Tension due to monkey $B = m g = 8 \times 10 = 80 N$
Total tension $= (120 + 80) = 200 N$
Hence,
option $(B)$ is correct answer.

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Ans :1st option

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Two monkeys of masses 10kg and 8kg are moving along a vertical light rope, the former climbing up with an acceleration of 2m/s2 when the latter coming down with a uniform velocity of 2m/s Find tension in the rope at the fixed support

The correct option is B 200NTension due to monkey on A=m(g+a)10(10+2)=120NTension due to monkey B=mg=8×10=80NTotal tension =(120+80)=200NHence,option (B) is correct answer.

Two monkeys of masses $10 k g$ and $8 k g$ are moving along a vertical light rope, the former climbing up with an acceleration of $2 m / s^{2}$ when the latter coming down with a uniform velocity of $2 m / s$ Find tension in the rope at the fixed support

The correct option is B $200 N$
Tension due to monkey on $A = m (g + a)$
$10 (10 + 2) = 120 N$
Tension due to monkey $B = m g = 8 \times 10 = 80 N$
Total tension $= (120 + 80) = 200 N$
Hence,
option $(B)$ is correct answer.