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9th Class Physics Chapter 4 Turning Effect of Forces English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Complete equation fy/fx =
Choose an answer
Sin𝜽
Cos 𝜽
Tan𝜽
Cos ec𝜽
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Question # 2
The formula of torque is:
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L= F x E
E = F x t
t = F x L
E = F x L
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Question # 3
The force with which Earth attracts the object towards its center is known as
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Force
Weight
Mass
Gravity
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Question # 4
Sin 45 is equal to:
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Zero
0.5
0.707
1
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Question # 5
Two equal but unlike parallel forces having different line of action produce:
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A torque
A couple
Equilibrium
Neutral equilibrium
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Question # 6
Cos 0
°
=
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0.5
1
0.866
0
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Question # 7
The centre of gravity of hollow cylinder is the middle point on its:
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Curved side
axis
Bottom
On upper side
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Question # 8
Racing cars are made stable by :
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Increasing their speed
Decrease their mass
Lowering their center of gravity
Decreasing their width
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Question # 9
At what angle sin𝜽 and cos𝜽 has same values:
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30
o
45
o
60
o
90
o
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Question # 10
It is easy to turn a steering wheel by applying a:
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Torque
Force
Couple
Momentum
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Question # 11
It is useful to know the location of center of gravity of a body in problem dealing with
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Motion
Equilibrium
Charge
Velocity
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Question # 12
ΣF=0 is __________ condition of equilibrium:
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1st
2nd
Unstable
Stable
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Question # 13
Unit of Resultant force is:
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Nm
-2
N.m
Nm
-1
N
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