Question # 1

Cos 0°=

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0.5

1

0.866

0

Tan 90°=

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Infinity

1

0

0.866

Sin 45^ois

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0.707

0.5

1

0.2

Which is not an example of torque?

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Opening a nut

Door opening

Picking up a toy

All of them

................. 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

A couple consists of how many forces:

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1

2

3

4

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

Racing cars are made stable by :

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Increasing their speed

Decrease their mass

Lowering their center of gravity

Decreasing their width

A body is in equilibrium when its:

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Acceleration in uniform

speed in uniform

Speed and Acceleration are uniform

Acceleration is Zero.

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

_____________ is centre from which its mass is equally distributed:

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Cebtre of mass

Centre of gravity

All of above

None

If force is 200 N and length of spanner is 0.15 then torque will be:

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30 Nm

15Nm

20 Nm

10 Nm

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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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