Monday 29th July 2024
    Difficulty: Hard

    Uphill struggle (Quiz #619)

    Photo by <a href="https://unsplash.com/@ezekiel?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Fernando Tapia</a>
    Photo by Fernando Tapia (Unsplash)

    The gradient of a physical feature refers to the angle of that surface to the horizontal. This is especially important in the design of roads and railways.

    1. If a slope rises at 45º to the horizontal, what is its gradient, expressed as a percentage?

    2. What is the gradient of the steepest railway line that does not use a rack system?

    3. Early railways in the UK had very gentle gradients. What was the gradient on the Great Western main line, nicknamed Brunel's Billiard Table?

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