(a)[3]
Calculate the moment of the 5.2 N force about the pivot, and show that it is near 30 N cm.
(b)[4]
The beam is in equilibrium. Calculate force P.
Physics 0625 · IGCSE · Forces
Forces — practice question
Fig. 3.1 represents the forces acting on a uniform beam that is balanced. The beam has its pivot at the centre.
Fig. 3.1 shows: a pivot at the centre; a downward force of 5.2 N applied 6.0 cm to the left of the pivot; a downward force of 8.1 N applied 2.0 cm to the right of the pivot; an upward force P applied 2.0 cm to the left of the pivot.
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