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Two boys of masses 10 kg and 8 kg are moving along a vertical rope, the former climbing up with acc. 2 m/s 2 while later coming down with the uniform velocity of 2 m/s. The tension in rope at fixed support will be (g=10 m/s 2 )??? Explain pls.

Two boys of masses 10 kg and 8 kg are moving along a vertical rope, the former climbing up with acc. 2 m/s2 while later coming down with the uniform velocity of 2 m/s. The tension in rope at fixed support will be (g=10 m/s2)???


Explain pls.

Grade:12th Pass

1 Answers

Swapnil Saxena
102 Points
9 years ago

The answer 200N.

The boy moving up has to apply a force of 120N (to counter gravity and accelerate up with acceleration of 2m/s) on the rope in the dowward direction and the boy moving up with the velocity of 2m/s has to apply a force of 80N to have a constant velocity or conter the gravity. thus the total force that the rope has to apply is 200N. 

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