WME01Topic 1.62 questions
Moments of forces and rigid bodies in equilibrium.
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Original practice questions written in the style of the exam.
A uniform plank has length and mass . It rests horizontally on two supports at and , where and . A man of mass stands on the plank. The plank is modelled as a uniform rod and the man as a particle.
(a) The man stands at the midpoint of the plank. Find the reactions at and at .
(b) The man now walks slowly towards . Find his distance from when the plank is about to tilt.