Question # 1

A spring of constant k = 0.4 N m^-1is to be extended through 10 cm at a place where g = 10 m sec^-2. The mass to be suspended should be:

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4 gms

0.4 gm

40 gms

None of these

To and from motion of a body about its mean position is known as:

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Translatory motion

Vibratory motion

Rotatory motion

None of these

When quarter of a circle is completed, the phase of vibration is:

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90°

180°

45°

360°

When a body is vibrating, the displacement from mean position

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Increases with time

Decreases with time

Changes with time

None of these

If a mass of 10 gm is suspended from a spring of k = 9.8 Nm^-1, then the extension will be:

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1 cm

1 m

10 mm

None of these

The restoring force is always directed towards:

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Rest position

Equilibrium position

Mean position

All of them

Vibratory motion is always under

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Applied force

Restoring force

Periodic force

Gravitational force

Amplitude in SHM is equivalent to ______ in circular motion:

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Diameter

Radius

Circumference

None of these

The restoring force is ______ and opposite tot he applied force within ______

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Equal, Elastic limit

Different, The walls of the laboratory

Different, Elastic limit

None of these

The body oscillates due to ______ accelerates and overshoots the rest position due to _____:

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Applied force , inertia

Restoring force, friction

Frictional force, inertia

Restoring force, inertia

A particle executes SHM with frequency. The frequency with which its K.E oscillates is

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f/2

2f

f

4f

The acceleration of body executing SHM is directly proportional to

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Applied force

Amplitude

Displacement

Frictional force

If mass of 10 gm is suspended from a spring of K=0.8 Nm^-1then the extension will be:

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10 cm

1 m

10 mn

None of these

If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:

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3 K

2 K

K/4

K/3

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