Question # 1

Tan 90°=

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Infinity

1

0

0.866

Base / Hypotenuse is called:

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Sin𝜽

Cos 𝜽

Tan 𝜽

Cot 𝜽

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

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2

3

4

Any Number

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

If Fy = 4 N and Fx = 3 N , what is the magnitude of resolution of force.

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5 N

7 N

10 N

15N

Sin 45 is equal to:

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Zero

0.5

0.707

1

Torque is a ___________ quantity.

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Vector

Scalar

Base

All of these

Consider a rigid body. As it rotates, its particles move in fixed

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Squares

Circles

Triangles

Rectnagles

The centre of gravity of irregular shaped body can be found with the help of:

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Wedge

Meter rod

Plumb line

Screw gauge

Unit of moment arm (L) is:

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Meter

Mole

Newton

Nm

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

If there is no change in state of motion, then the body is said be i:

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Rest

Motion

Equilibrium

Rest & motion

When 10 N along positive x-axis and 7 N along negative x-axis are added by head to tail rule. The resultant force is:

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17 N

10 N

7N

3 N

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Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers

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