A uniform metre ruler, acted upon by three forces is balanced on a pivot as shown in Figure 1.23 A) Which one of the forces has no moment about the pivot? Explain your answer.

B)Calculate the moments of the other two forces about the pivot

C)Will the ruler turn? Explain.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

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find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle