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Worksheet: Moments in 2D

Q1:

In the given figure, find the magnitude of the moment of the force 115 N about the origin point rounded to two decimal places.

Q2:

In the given figure, find the magnitude of the moment of the force 100 N about the origin point rounded to two decimal places.

Q3:

In the figure below, given that and , determine the magnitude of the moment of the force N about the point .

Q4:

In the figure below, given that and , determine the magnitude of the moment of the force N about the point .

Q5:

The following figure illustrates 4 different ways that a force acts on a door, which is attached to a hinge. Determine the situation in which the force has the greatest moment about the hinge.

• A(c)
• B(b)
• C(d)
• D(a)

Q6:

Determine the algebraic measure of the moment of the force having a magnitude of 172 N about the point .

Q7:

Given that the force 9 N is acting as shown in the figure, find the algebraic measure of its moment about point .

• A Nācm
• B Nācm
• C Nācm
• D Nācm

Q8:

Given that the force 13 N is acting as shown in the figure, find the algebraic measure of its moment about point .

• A Nācm
• B Nācm
• C Nācm
• D 52 Nācm

Q9:

In the figure, the rod is fixed by a freely rotating hinge at . If a vertical force of magnitude 120 N acts downwards as shown at end , find the magnitude of the moment of the force about .

• A Nām
• B 72 Nām
• C 144 Nām
• D Nām

Q10:

In the figure, the rod is fixed by a freely rotating hinge at . If a vertical force of magnitude 40 N acts downwards as shown at end , find the magnitude of the moment of the force about .

• A Nām
• B Nām
• C 80 Nām
• D 40 Nām

Q11:

In the figure, the rod is fixed by a freely rotating hinge at . If a vertical force of magnitude 160 N acts downwards as shown at end , find the magnitude of the moment of the force about .