Question # 1

Sin 45 is equal to:

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Zero

0.5

0.707

1

Resultant vector can be found by:

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θ=tan^-1 Fy/ Fx

θ=tan[Fy/ Fx ]

θ=tan^-1[ Fy/ Fj ]

None of these

The turning effect of force is called:

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Torque

Parallel force

Equilibrium

Couple

The resultant vector of given vectors A and B is

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A body is in neutral equilibrium when its centre of gravity:

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Is at its highest position

Is at the lowest position

Keep its height if displaced

Is situated at its bottom

The number of forces that can be added by head to tail rule are

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2

3

4

Any Number

A force of 200 N is making an angle of 30°. What is horizontal component?

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173.2 N

100 N

600 N

None of these

A force of 10 N is making and angle of 30^owith the horizontal. Its horizontal component will bw:

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4 N

5 N

7 N

8.7 N

Two equal but unlike parallel forces having different lines of action produce:

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a Torque

a couple

Equilibrium

Netural equilibrium

The symbol of sigma is :

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Σ

m

=

$

Sin 45^ois

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0.707

0.5

1

0.2

PQ & RS are 2 parallel forces moving in same direction than they are called ............... forces.

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Like parallel

Unlike

Parallel

Nil

_____________ is related to earth attractive force.

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Centre of gravity

Acceleration

Velocity

Nil

The force with which Earth attracts the object towards its center is known as

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Force

Weight

Mass

Gravity

The angle between rectangular components of a vector is

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0°

90°

180°

270°

Centre of gravity of uniform square is:

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Intersection of diagonals

Point of intersection of medians

At centre

None of these

The single force that has the same effect as the combined effect of all the force to be added is called a

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Opposite force

Single force

Resultant force

Resultant vector

The measure of an object tendency to rotate about same axis is :

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Force

Moment arm

Torque

None of these

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9th Class Physics Chapter 4 Turning Effect of Forces English Medium KPK Boards Online Mcqs MCQs With Answers

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