Question # 1

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

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

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.

Cos 0°=

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0.5

1

0.866

0

Tan 90°=

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Infinity

1

0

0.866

Centre of gravity of uniform square is:

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Intersection of diagonals

Point of intersection of medians

At centre

None of these

Racing cars are made stable by :

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Increasing their speed

Decrease their mass

Lowering their center of gravity

Decreasing their width

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

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Like parallel

Unlike

Parallel

Nil

The unit of torque is:

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Nm^-2

Ncm

Nm^-1

Nm

The product of force and momentum arm is called:

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Couple arm

Torque

Rigid body

Axis of rotation

A force of 10 N is making an angle of 30o with the horizontal. Its horizontal component will be

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4N

5N

7N

8.7N

The resultant vector of given vectors A and B is

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_____________ easily undo bolt?

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Long spanner

Medium

Short spanner

Every spanner

__________ forces have opposite direction:

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Unlike parallel

Parallel

Like parallel

None of these

If base of a right angle triangle is 3 cm and perpendicular is 4 cm. What is length of perpndicular?

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3 cm

2 cm

5 cm

10 cm

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

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

Turning effect of a force is called:

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Torque

Moment

Couple

Torque and momentum

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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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