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WorksheetsMoment of Force
Total questions: 25
Worksheet time: 14mins
The beam is balanced.
True
False
A force of 4 N acts on a lever 2 m from the pivot. What is the moment?
8 Nm
6 Nm
2 Nm
3 Nm
One way to increase the turning force on a spanner is to:
Use a shorter spanner
Use a longer pivot
Use a longer spanner
Use less force
James weighs 200 N and sits 1 m from the pivot. Jane weighs 100 N. How far from the pivot must Jane be to balance the beam?
0.5 m
1 m
2 m
4 m
A cat weighing 50 N is 1 m from the pivot. How far away does a mouse weighing 0.5 N have to be to balance the beam?
1 m
10 m
100 m
1000 m
A force exerts a moment of 2 Nm. What is the distance of the force from the pivot?
2 m
4 m
1 m
0.5 m
What is the unit of moment f force?
N
m
Nm
N/m
The moment of force defined as the product of....
the force and the acceleration
the force and the perpendicular distance
the force and the velocity
the force and the perpendicular distance from pivot
State the principle of moments.
When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is greater the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is less than the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the different pivot.
Which statement is correct?
All the forces are equal in size.
The resultant force on the beam is in the opposite direction to the resultant turning effect.
The resultant force on the beam is zero and the resultant turning effect on the beam is zero.
The total upward force is twice the total downward force.
Select TWO situations that involve a moment of force
Lifting a pail
Tighten the nut with a wrench
Opening a door
Raising the flag
The moment of force depends on TWO factors, namely
the force applied
perpendicular distance of the fulcrum to the force
power in the fulcrum and force
time from fulcrum and force
Which of the following lever is balanced?
(Choose two correct answers.)
What mass now balances the bags?
3.5 kg
7.0 kg
12 kg
14 kg
Which diagram shows the rod in equilibrium?
A
B
C
D
Which beams rotate clockwise?
P and Q only
P and R only
Q and R only
P, Q and R
In the diagram, W is the weight of the plank, acting at its mid-point. What is the value of W?
47 N
100 N
133 N
350 N
Which cone is the most stable?
A
B
C
D
Which chair is the least stable if the child moves?
A
B
C
D
Which force will rebalance the beam?
30N acting upwards, 60cm to the left of the midpoint
30N acting downwards, 60cm to the right of the midpoint
45N acting downwards, 45cm to the right of the midpoint
90N acting downwards, 20cm to the left of the midpoint
The beam is in equilibrium. Which statement is correct?
All the forces are equal in size.
The resultant force on the beam is in the opposite direction to the resultant turning effect.
The resultant force on the beam is zero and the resultant turning effect on the beam is zero.
The total upward force is twice the total downward force.
In which diagram is the plate in equilibrium?
A
B
C
D
