Question # 1

A body is said to be in __________ equilibrium if after a slight tilt return to its previous position:

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Stable

Unstable

Neutral

None

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

The vector which has the same effect as the combined effect of vectors:

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Negative vector

The vector

Resultant vector

Zero vector

A couple is formed by

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Two forces perpendicular to each other

Two like parallel forces

Two equal and opposite forces in the same line

Two equal and opposite forces not in the same line

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

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Force

Weight

Mass

Gravity

Unit of Resultant force is:

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Nm^-2

N.m

Nm^-1

N

Centre of gravity of sphere is at:

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Centre of sphere

Outside of sphere

Radius of sphere

None of these

The value of sin θ at an angle of 60o is

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0.5

0

0.707

0.866

It base of a right angled triangle is 3 cm and its perpendicular is 3 cm.Then its hypotenuse will be

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2 cm

4 cm

6 cm

5 cm

Tan 90°=

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Infinity

1

0

0.866

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

.............. is example of vector.

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Length

Force

Mass

Time

If the applied force is 'F' and its moment arm is 'r' then torque is defined as

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τ = rF

τ = r2F

τ = r + F

τ = 2rF

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

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

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Like parallel

Unlike

Parallel

Nil

If Fx and Fy are rectangular components of vector F, then its direction is determined by the relation

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θ = sin-1 Fv/Fx

θ = tan-1 Fx/Fy

θ = tan Fx/Fy

θ = tan Fy/Fx

The turning effect of force is called:

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Torque

Parallel force

Equilibrium

Couple

F_x= 4 N and F_y=3N what is F?

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5N

1.5 N

16 N

9 N

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