Question:medium
A ladder AB, of length 13m, has one end A on a levelled horizontal ground and the other end B resting against a vertical wall. If the end A begins to slip away from the wall with constant speed 0.25 m/s, and the end B slips down the wall, then the speed of the end B, when B has reached a height of 5m above the ground, is
A ladder AB, of length 13m, has one end A on a levelled horizontal ground and the other end B resting against a vertical wall. If the end A begins to slip away from the wall with constant speed 0.25 m/s, and the end B slips down the wall, then the speed of the end B, when B has reached a height of 5m above the ground, is
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The ratio of speeds is inversely proportional to the distances: \(\frac{dy}{dt} = -\frac{x}{y} \frac{dx}{dt}\). Since \(x > y\), the speed of B will be greater than the speed of A.
Updated On: Jun 24, 2026
- 0.6 m/s
- 0.5 m/s
- 0.45 m/s
- 0.4 m/s
- 0.35 m/s
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The Correct Option is A
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