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  4. A pendulum bob of mass 50g is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

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Q. A pendulum bob of mass $50g$ is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

NTA AbhyasNTA Abhyas 2022

Solution:

As elevator goes up with uniform velocity then acceleration a = 0
$T = m \left(g + a\right)$
$T=mg=\left(50 \times \left(10\right)^{- 3}\right)\times 10$
$=0.5 \, $ N