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Worked Example 02

Worked Example 02

The Question

After a series of workplace accident involving window cleaners on ladders, the government has asked you to come up with a set of guidelines for safe ladder use. Most of the accidents occur when a worker is climbing up a ladder which is leaning against large plate glass window, and the base of the ladder slides sideways, causing the ladder to collapse.

How far from the base of a window should the base of a ladder be placed to avoid slipping? Your boss wants an equation which can be used to produce a table of safe distances, for different workers, ladders, ground surfaces etc. You may assume that friction between the top of the ladder and the window is negligible.

The Answer

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