AIIMS 2018 Physics Tension in Strings MCQ Question

When a 100 kg block is moving upwards with constant velocity, the net force acting on it is zero, meaning the upward tension (T) in the rope must equal the downward gravitational force (weight) acting on the block. The weight can be calculated using the formula $W = mg$, where $m = 100 \, \text{kg}$ and $g = 9.8 \, \text{m/s}^2$, resulting in $W = 100 \times 9.8 = 980 \, \text{N}$. Since the block is moving at constant velocity, the tension must also account for any additional forces acting at point P, leading to a total tension of 1470 N. Other options are incorrect as they do not accurately reflect the balance of forces in this scenario.