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Middle School: 6th, 7th and 8th Grade
Science
Moments
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Q.1
Moments (turning forces) depend on .......
0%
force and distance from the pivot
0%
force and mass
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force and weight
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mass and distance from the pivot
Q.2
The moment will be increased .......
0%
if the force and distance from the pivot are decreased
0%
if the force and distance from the pivot are increased
0%
if the force is decreased and distance is increased
0%
if the force is increased and distance is decreased
Q.3
Jane weighs 400N. She sits on a see-saw 1.5m from the pivot (center). Calculate the moment caused by Jane.
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200Nm
0%
400Nm
0%
600Nm
0%
800Nm
Q.4
Amir weighs 500N. He sits on a see-saw 200cm from the pivot (center). Calculate the moment caused by Amir.
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200Nm
0%
700Nm
0%
1,000Nm
0%
10,000Nm
Q.5
Two children weigh 300N and 400N, they sit 2m and 3m away from the pivot (center) on the same side of the see-saw. What is their total moment?
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1,700Nm
0%
1,800Nm
0%
2,200Nm
0%
3,500Nm
Q.6
A friend joins the two children (Q5) and sits on the other end of the see-saw. He weighs 600N. How far from the pivot must he sit to balance the see-saw?
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2m
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2.5m
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3m
0%
5m
Q.7
A spanner is 20cm long. A force of 10N is applied to undo a bolt. What is the moment (turning force)?
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2Nm
0%
20Nm
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200Nm
0%
2,000Nm
Q.8
A 40cm spanner is used to produce the same turning force as QWhat force would be needed?
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Double the force
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Quarter of the force
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Half the force
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The same force
Q.9
A moment of 50Nm is needed to open a jar. The pliers are 10cm long. What force is needed?
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5N
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50N
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100N
0%
500N
Q.10
A moment of 80Nm is needed to undo a wheel nut. The spanner is 20cm long. What force is needed?
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4N
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80N
0%
400N
0%
800N
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