Question # 1

Which of the following is not essential for the free oscillations of a mass attached to a spring.

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Elasticity

Gravity

Inertia

Restoring force

Which of the following is an example of negative work.

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a thrown up cricket ball

Grass mower

A car on road

Bucket in the well

A body of mass 3 kg lies on the surface of the table 2 m high it is moved on the surface 4 m the change in P.E. will be.

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9.8 J

6 J

Zero

329 J

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

The value of 'g' is affected by earth's

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Non spherical shape

Daily motion

Volume

Density

If a force 5 N applied parallel to a moment arm 5 m then torque will be

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0 N m

5 N m

10 N m

25 Nm

Which are the two basic properties of a vector.

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Curvature and direction

Magnitude and direction

Magnitude and sign

Curvature and sign

Where should be the centre of gravity of a body.

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It must be within the body

It must be outside the body

It may be near but not essentially within the body

It changes its position after sometime

In any collision between two bodies there need nor the conservation of

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Linear momentum

Angular momentum

Total energy

Kinetic energy

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

Which pair of the following forces has a resultant force of 2 N.

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1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

The force of friction that comes into action after the motion has started

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Static friction

Dynamic friction

Friction only

Limiting friction

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

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Rest mass

Gravitational mass

Inertial mass

Weight

One radian is equl to

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57.3 ^o

67.3 ^o

60 ^o

87.3 ^o

The horizontal range is equal for the angles.

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30 ^o and 45 ^o

30 ^oand 60 ^o

45 ^o and 90 ^o

60 ^oand 75 ^o

The are between the velocity time graph and the time axis is numerically equal to.

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Distance moved by the object

Speed of the object

Velocity of the object

Acceleration of the object

In rotational motion the quantity which plays the same role as the inertial mass in rectilinear motion.

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Angular momentum

Linear momentum

Moment of inertia

Torque

The reverse process of vector addition is called

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Negative of a vector

Subtraction of vectors

Resolution of vectors

Multiplication of vector

If a car is to gain momentum it must.

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Lose inertia

accelerate

Move rapidly

Lose weight

If average acceleration is equal to instantaneous acceleration then the body's said to be moving.

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Negative acceleration

Positive acceleration

uniform acceleration

Variable acceleration

The horizontal distance of a projectile from the point of launch to the point of impacts is called.

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Height of projectile

Range of projectile

Path of projectile

Angle of projectile

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