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3 Mechanics

In this question use $g = 9.8$ m s $^{-2}$ .

A uniform plank $AB\,$ of length 6 m and mass 40 kg rests horizontally on two supports at $C\,$ and $D$ , where $A C = 1.5$ m and $A D = 4$ m.

A man of mass 80 kg stands on the plank at a distance $y\,$ m from $A$ .

Find the set of possible values of $y\,$ for which the plank remains in equilibrium.

[5]

3 Mechanics Questions

In this question use $g = 9.8$ m s $^{-2}$ .

A uniform plank $AB\,$ of length 6 m and mass 40 kg rests horizontally on two supports at $C\,$ and $D$ , where $A C = 1.5$ m and $A D = 4$ m.

A man of mass 80 kg stands on the plank at a distance $y\,$ m from $A$ .

Find the set of possible values of $y\,$ for which the plank remains in equilibrium.

[5]