Question # 1

A body is in equilibrium when its

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Acceleration is uniform

Speed is uniform

Speed and acceleration are uniform

Acceleration is zero

The centre of gravity of uniform triangle is:

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Point of intersection of medians

On its vertex

On middle point of its axis

Point of intersection of diagonal

Base / Hypotenuse is called:

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Sin𝜽

Cos 𝜽

Tan 𝜽

Cot 𝜽

ΣF=0 is __________ condition of equilibrium:

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1st

2nd

Unstable

Stable

To make a body more stable ________ should be lowered:

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Axis of rotation

Center of gravity

Stabilty

None

................. can be add algebraically.

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Scalar quantities

Vector

All

None

The turning effect of force is called:

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Torque

Parallel force

Equilibrium

Couple

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

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Length

Force

Mass

Time

The formula of y component of force ' F ' is:

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F cos 𝜽

F Sin 𝜽

F tan 𝜽

Tan^-1 𝜽

If Fx and Fy are rectangular components of a vector F, then the magnitude of vector F is:

[LHR-04 1st G]

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__________ forces have opposite direction:

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Unlike parallel

Parallel

Like parallel

None of these

To find x component of force 'F' we use formul:

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F Sin 𝜽

F Cos 𝜽

F tan 𝜽

F/F1

Turning effect of a force is called:

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Torque

Moment

Couple

Torque and momentum

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

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