revision levers
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Lesson duration is: 10 minItems in this lesson
Slide 1 - Slide
What is a moment?
A
a lever
B
The turning effect of a force
C
A quantity detected by a multimeter
D
an infinite small amount time
Slide 2 - Quiz
What is the unit of a moment?
A
Newton
B
Newton/meter
C
Newton*meter
D
meter/Newton
Slide 3 - Quiz
What the shortest distance between a line of action of a force and the pivot?
A
from the pivot to the end of the vector
B
from the pivot perpendicular to the vector
C
from te pivot to the middle of the vector
D
from the pivot parallel to the vector
Slide 4 - Quiz
What is the moment of a 6 N force acting 1.5 m from a pivot?
A
4 N/m
B
9 N/m
C
4 Nm
D
9 Nm
Slide 5 - Quiz
What is the principle of moments?
A
Total clockwise moment > total anticlockwise moment
B
Total clockwise moment < total anticlockwise moment
C
Total clockwise moment = total anticlockwise moment
Slide 6 - Quiz
What is the name of the force applied to a lever?
A
Effort
B
Pivot
C
Lever
D
Load
Slide 7 - Quiz
What will be the effect of using a longer lever to apply a force further from the pivot
A
The turning effect will increase
B
The turning effect will decrease
C
There will be no difference in the turning effect
Slide 8 - Quiz
Two identical weights are attached to opposite ends of a beam. Both are 1 m from the pivot. What happens if the right-hand weight is moved closer to the pivot?
A
The beam rotates clockwise
B
The beam rotates anticlockwise
C
The moment of the left-hand weight decreases
Slide 9 - Quiz
A solid beam 0.5 m long is laid across a pivot to form a simple lever. The pivot is 0.1 m from the end of the beam. Calculate the heaviest load that could be lifted using a force of 500 N.
