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Standard XII

Physics

Relative Velocity in 2D

Two monkeys o...

Question

Two monkeys of masses 10 kg and 8 kg are moving along a vertical rope which is light and inextensible, the former climbing up with an acceleration of $2 m / s^{2}$ while the later coming down with a uniform velocity of 2m/s. Find the tension (in newtons).

200 N

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150 N

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300 N

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100 n

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Solution

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

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A monkey of mass 20kg climbs on a rope which can stand a maximum tension of 300 N.in which of the following cases the rope breaks? The monkey

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Ans :1st option

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Two monkeys of masses 10 kg and 8 kg are moving along a vertical rope which is light and inextensible, the former climbing up with an acceleration of 2m/s2 while the later coming down with a uniform velocity of 2m/s. Find the tension (in newtons).

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

Two monkeys of masses 10 kg and 8 kg are moving along a vertical rope which is light and inextensible, the former climbing up with an acceleration of $2 m / s^{2}$ while the later coming down with a uniform velocity of 2m/s. Find the tension (in newtons).

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