Question # 1

Angular momentum of a body under a central force is

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Zero

Maximum

Minimum

Constant

A force passing through the centre of gravity of a body

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Causes its translational motion

Causes its rotational motion

Holds the body in equilibrium

Produces both translational and rotational motion.

Two forces act together on an object the magnitude of their resultant force is minimum when they act at

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0 ^o

45^oC

90^o

180 ^o

Linear acceleration of a point moving in a circle of radius 30 cm with angular acceleration of 0.5 rad s-2 is

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1.5 cm s-2

2.5 cm s-2

10 cm s-1

15 cm s-2

Which of the following is a set of supplementary units.

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Radian and steradian

Radian and mole

Steradian and candela

Radian and kelvin

The static friction is.

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Always equal to dynamic friction

Always less than dynamic friction

Always greater than dynamic friction

Sometimes greater and sometimes less than dynamic friction

The point of which the whole weight of the body acts

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zero point

Centre of mass

Centre of gravity

Equilibrium

Oscillatory motion is always under

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An applied force

Restoring force and inertia

A periodic force

A gravitational force

The mass that appears in Newton's second law is known as.

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Rest mass

Gravitational mass

Inertial mass

Weight

The graph between restoring force and time in SHM is a

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Straight line

Parabola

Sine wave

Circle

The condition of complete equilibrium is satisfied if.

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Vector sum of all the torques is zero

Vector sum of all the forces is zero

Vector sum of all the forces and torques is zero

Angular acceleration is zero

A man of mass 100 kg is standing in an elevator. The net force acting on the man reads its weight when the elevator is going up with acceleration 4 m s-2 would be.

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100 N

590 N

490 N

980 N

For maximum range angle of projection of the projectile should be

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45 ^o

90^o

120 ^o

180 ^o

The dimensions of work are

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[MLT-2]

[ML2T-2]

[ML2T-1]

[MLT-1]

The international acceptable scientific notation of a number 123.4 is

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12.34 x 10¹

1.234 x 10²

1.234 x 10³

0.123 x 10³

A body is in a static equilibrium, only when it is

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Moving with uniform velocity

Moving with variable velocity

Moving with uniform acceleration

at rest

When a vector is multiplied by a negative number its direction.

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Remains unchanged

Changes by 180 ^o

Becomes horizontal

Vertical to each other

If the vector sum of all the torques is zero then

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1st condition is satisfied

2nd condition is satisfied

Centre of mass is lowered

Gravity becomes zero

The term radius of gyration relates to.

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Moment of force

Moment of inertia

Law of gravitation

simple harmonic motion

The dimensions of torque are.

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[MLT-2]

[ML-1T-1]

[ML2T-2]

[ML-2]

Work has the same dimensions as that of

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Power

Liner momentum

Angular momentum

Torque

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