3/ A uniform metre ruler, acted upon by three forces is balanced on a pivota
shown in Figure 1.23.
20 N
F
30 cm
70 cm
G
fo
6N
14 N
Figure 1.23
Ñ€
P
a) Which one of the forces has no moment about the pivot? Explain your
a
answer.
b) Calculate the moments of the other two forces about the pivot.
c) Will the ruler turn? Explain.
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3/ A uniform metre ruler, acted upon by three forces is balanced on a pivota
shown in Figure 1.23....
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