Welcome to the Quiz!
This quiz contains 14 questions from a mix of 1 subtopics.
Which factor does the magnitude of a moment depend on?
neither the force nor the distance
the distance from the pivot point only
the force only
both the force and the distance from the pivot point
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According to the principle of moments, when is an object in equilibrium?
when the clockwise moments equal the anticlockwise moments
when the clockwise moments are greater than the anticlockwise moments
when there are no moments acting on the object
when the anticlockwise moments are greater than the clockwise moments
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What makes up a couple?
A single force
three collinear forces
two equal and opposite parallel forces separated by a distance
A pivot point and a force
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What does a couple produce?
A normal force
compression
translation
A torque
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How is the torque (T) produced by a couple calculated?
T = F + d
T = F - d
T = F / d
T = F x d
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What is the purpose of using couples in mechanisms?
to induce rotation without linear motion
to produce heat
to induce linear motion
to create compression
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What induces rotation in an object?
normal force
gravity
kinetic friction
A torque
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What is it called when two equal and opposite parallel forces separated by a distance produce a torque?
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List 3 ways the principle of moments can be applied.
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A seesaw is perfectly balanced when a 40 N force is applied 1.5 m from the pivot on one side. What force must be applied at a distance of 3 m on the opposite side to maintain equilibrium?
80 N
30 N
20 N
60 N
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Calculate the torque produced by a couple when two 30 N forces are applied on opposite sides of a door handle, 0.5 m apart.
30 N m
15 N m
60 N m
10 N m
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A plank of wood is being lifted by applying a force at one end while the other end remains on the ground, acting as a pivot. If the force applied is 50 N at a distance of 2 m from the pivot, what is the moment generated?
200 N m
100 N m
50 N m
25 N m
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To balance a beam, a 25 N force is applied 4 m from the pivot on one side. How far from the pivot must a 100 N force be applied on the other side to achieve equilibrium?
2 m
1 m
0.5 m
1.5 m
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A person applies a force of 20 N to open a door. If the force is applied perpendicularly at a distance of 0.8 m from the hinge (pivot), calculate the moment generated by this force.
32 Nm
16 Nm
8 Nm
64 Nm
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