(a)[4]
Calculate the moment produced by the beam's weight about the pivot. Include the correct unit in your answer.
(b)[3]
Describe and explain what problem this creates for the man as he lowers the barrier.
Physics 0625 · IGCSE · Forces
Forces — practice question
Fig. 3.1 illustrates a barrier in a car park. A man raises and lowers the beam by turning it about its pivot.
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This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “moment of weight = weight \times perpendicular distance from pivot, in this situation” …
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