2025 JPJC P1 Q3

2025 JPJC P1 Q3

4 marks

A ladder of length \(3.12\) m is sliding down a vertical wall such that the foot of the ladder is moving along the floor at a constant rate of \(0.2\) m/s (see diagram). Find the rate at which the top of the ladder is sliding down the wall when it is \(1.2\) m above the floor.[4]

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Answer:The top of the ladder slides down at \(0.48\text{ m s}^{-1}\).

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