893601
Frage 1
Frage
True or false? A moment is a turning effect of a force.
Antworten
- True
- False
Frage 2
Frage
Which of these are components of a lever?
Antworten
-
Load
-
Work
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Effort
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Energy
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Fulcrum
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Force
Frage 3
Frage
Which of these is the correct equation for a moment?
Antworten
-
Moment = force * distance from line of action
-
Moment = force * perpendicular distance from line of action
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Moment = force/distance from line of action
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Moment = force/perpendicular distance from line of action
Frage 4
Frage
True or false? The centre of mass is the point at which the object's weight can be thought to be concentrated.
Antworten
- True
- False
Frage 5
Frage
True or false? If an object's centre of mass lies outside the point of suspension, the object is in equilibrium.
Antworten
- True
- False
Frage 6
Frage
Where is the centre of mass in a symmetrical object with multiple lines of symmetry?
Antworten
-
At a point on one of the lines of symmetry
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At a point which is not on the lines of symmetry
-
At the point where the lines of symmetry meet
Frage 7
Frage
True or false? The sum of all clockwise moments is always greater than the sum of all anticlockwise moments about a single point in equilibrium.
Antworten
- True
- False
Frage 8
Frage
How far from the fulcrum would I place a parcel with weight 20N on a seesaw if there were a parcel with weight 17.5N 4m from the fulcrum?
Antworten
-
3m
-
3.5m
-
3.75m
-
3.25m
-
4m
Frage 9
Frage
When will there be a resultant moment causing an object to topple over?
Antworten
-
When the centre of mass is within the base
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When the centre of mass is directly above the base
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When the centre of mass is outside the base
Frage 10
Frage
Where would you recommend passengers to sit in a double-decker bus to increase its stability?
Antworten
-
On the lower deck
-
On the upper deck
Frage 11
Frage
Which of these decrease the stability of an object?
Antworten
-
Wide base
-
Narrow base
-
Low centre of mass
-
High centre of mass
Frage 12
Frage
Which of these is the correct equation for pressure?
Antworten
-
Pressure = force/area
-
Pressure = area/force
-
Pressure = force * area
Frage 13
Frage
True or false? The pressure in a liquid does not act equally over all directions.
Antworten
- True
- False
Frage 14
Frage
What is the force on a load in a hydraulic system if the force on the effort is 20N, the area of the effort is 0.05m^2 and the area of the load is 1.5m^2?
Antworten
-
600N
-
60N
-
0.67N
Frage 15
Frage
True or false? Centripetal acceleration acts towards the centre of a circle.
Antworten
- True
- False
Frage 16
Frage
True or false? Centripetal force is a force in its own right.
Antworten
- True
- False
Frage 17
Frage
Which of these will increase the centripetal force acting upon an object?
Antworten
-
Increase in mass
-
Decrease in mass
-
Increase in speed
-
Decrease in speed
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Increase in radius
-
Decrease in radius
Frage 18
Frage
What type of motion does a simple pendulum follow?
Antworten
-
Reciprocating motion
-
Oscillating motion
Frage 19
Frage
True or false? The amplitude of a pendulum is the distance between the equilibrium position and the highest point on either side.
Antworten
- True
- False
Frage 20
Frage
True or false? The time period of a pendulum is the time it takes to go from the highest point on one side to the other.
Antworten
- True
- False
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