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WorksheetsIG Turning effect
Total questions: 15
Worksheet time: 14mins
The moment of a force causes an object to
move forward
move backward
stop moving
turn about a fixed point
The turning effect of a force on a door is greater when it is applied at
A point near the hinges and perpendicular to the door
A point near the hinges and parallel to the door
A point far away from the hinges and perpendicular to the door
A point far away from the hinges and parallel to the door
Two equal and oppositely directed forces acting on an object will be in equilibrium
Only if they act on the same point on the object
If they are separated by a distance
When they are balanced by a third force
when their moments about the same point are equal
The diagram shows a light beam pivoted at one end. What is the effort required to lift the load?
50
67
100
200
The diagram shows a gauge which measures the amount of liquid in a tank. At which position should the pivot be placed so that the pointer moves the greatest distance as the tank is emptied?
A
B
C
D
What is the force F needed to balance the bar shown?
3
4
6
8
A force of 120 N is applied perpendicularly on a spanner at a distance of 9 cm from a nut. The torque produced by the force will be
12 Nm
10.8 Nm
15 Nm
12.59 Nm
A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?
450 N
350 N
4.5 N
200 N
The diagram shows the first step in an experiment to determine the position of the centre of mass of a thin card.
What is the next step in this experiment?
Find the mid-point of PQ.
Hang the card from point R.
Measure the mass of the card.
Measure the thickness of the card.
Diagram shows 4 objects on a flat surface.
M is the centre of mass of the objects.
Which object is about to fall over?
A
B
C
D
Diagram shows an object of weight W and an object of weight Z balanced on a uniform metre rule.
Which equation relating to W, Z, a and b is correct?
W/a = Z/b
W × Z = a × b
W × a = Z × b
W × (a + b) = Z
How are weight, mass and g related
W=mg
m=Wg
g=Wm
m=W/g
Which equation relates force, acceleration and mass?
Tick all that are correct
F=ma
F=am
a=mF
a=Fm
Turning effect of force is ________.
torque
moment of force
balancing moment
couple
The SI unit of moment of force is –
m
N
kgf
Nm
