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Waves And Oscillation

Solution for Class 11, Physics, Waves And Oscillation

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A 100 g mass stretches a particular spring by 9.8 cm, when suspended vertically from it. How large a mass must be attached to the spring if the period of vibration is to be 6.28 s?a. 1000g b.

10^{5} g

10^{7} g

10^{4} g

Topic:

Waves & Oscillation

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Views: 5,907

A block is kept on a rough horizontal plank. The coefficient of friction between block and plank is

1 / 2

. Plank is undergoing

S H M

is angular frequency

10 r a d / s

. Find the maximum amplitude of plank in which the block does slip over plank

(g = 10 m / s^{2})

Topic:

Waves & Oscillation

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Views: 5,986

A block is resting on a piston which executes simple harmonic motion in vertical plain with a period of

2.0 s

in vertical plane at an amplitude just sufficient for the block to separate from the piston. The maximum velocity of the piston is a.

1.57 m s^{- 1}

3.12 m s^{- 1}

2.0 m s^{- 1}

6.42 m s^{- 1}

Topic:

Waves & Oscillation

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Views: 5,489

A block of mass

m

is attached to one end of a light intextensible string passing over a smooth light pulled

A

and under another smooth light pulled

B

as shown in Fig. The other end of a springs is fixed to a ceiling.

A

B

are held by spring of force constant

k_{1}

k_{2}

. Find the period of small oscillations of system.

Topic:

Waves & Oscillation

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Views: 5,664

A block of mass m kg hanging from a verticla spring executes simple harmonic motion of amplitude 4 cm . If maximum speed of particle is

8 m / s

. Maximum acceleration of block is a.

800 m / s^{2}

100 m / s^{2}

1600 m / s^{2}

400 m / s^{2}

Topic:

Waves & Oscillation

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Views: 5,351

A body executes SHM according to the equation,

y = 6 sin (2 π t + π / 6)

t = 2

s, calculate displacement

Topic:

Waves & Oscillation

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Views: 5,852

A body executing

S H M

has a maximum velocity of

1 m s^{- 1}

and a maximum acceleration of

4 m s^{- 1}

. Its time period of oscillation is a.

3.14 s

1.57 s

6.28 s

0.25 s

Topic:

Waves & Oscillation

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Views: 5,239

A body executing S.H.M has maximum acceleration equal to

24 m / sec

and maximum velocity equal to

16 m / sec

. The amplitude of S.H.M isa.

\frac{3}{32} m

\frac{64}{9} m

\frac{32}{3} m

\frac{1024}{9} m

Topic:

Waves & Oscillation

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Views: 5,922

A body is executing

S H M

. If the force acting on the body is

6 N

when the displacement is

2 c m

, then the force acting on the body at a displacement of

3 c m

6 N

9 N

4 N

6 N

Topic:

Waves & Oscillation

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Question 10

Views: 5,793

A body is executing S.H.M. with period 12 s. The time it takes in traversing a distance equal to half its amplitude is : a. 6 s b. 9 s c. 3 s d. 1 s

Topic:

Waves & Oscillation

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Question 11

Views: 5,366

A body of mass 0.1 kg is executing a simple harmonic motion of amplitude 0.2 m. When the body passes through the mean position, its kinetic energy is

8 \times 10^{- 3}

J. The initial phase of oscillation is 60. What is the equation of motion of the body ?a.

y = 0.2 sin (\frac{1}{4} + \frac{π}{3})

y = 0.2 sin (4 t + \frac{π}{3})

y = 0.2 sin (\frac{1}{2} + \frac{π}{3})

y = 0.2 sin (4 t - \frac{π}{3})

Topic:

Waves & Oscillation

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Question 12

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A body of mass 0.25 kg is attached to a vertical spring. The spring is executing damped simple harmonic spring will drop to half its initial value ? [The damping constant b = 0.05 kg/s]a.

4 log_{10^{2}}

4 log_{e^{2}}

5 log_{e^{2}}

5 log_{10^{2}}

Topic:

Waves & Oscillation

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Question 13

Views: 5,742

A body of mass 0.2kg performs linear S.H.M. It experiences a restoring force of 0.2N when its displacement from the mean position is 4 cm. Determine
force constant

Topic:

Waves & Oscillation

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Question 14

Views: 5,673

A body of mass 1kg is executing SHM given by

x = 4 cos (100 t + \frac{π}{2})

cm what is the velocity ? a.

200 sin (100 t + \frac{π}{2})

- 200 sin (100 t + \frac{π}{2})

400 sin (100 t + \frac{π}{2})

- 400 sin (100 t + \frac{π}{2})

Topic:

Waves & Oscillation

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Question 15

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A body of mass m is executing SHM with amplitude a. When its displacement x=1 unit, the force is b then what will be its maximum kinetic energy?

Topic:

Waves & Oscillation

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Question 16

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m

is suspended from three springs as shown in figure. If mass

m

is displaced slightly then time period of oscillation is
a.

2 π \frac{m}{3 K}

2 π \frac{3 m}{2 K}

2 π \frac{2 m}{3 K}

2 π \frac{3 K}{m}

Topic:

Waves & Oscillation

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Question 17

Views: 5,331

A cube made of wood having specific gravity

0.4

and side length

a

is floated in a large tanck full of water.

What can be maximum amplitude of it's vertical simple harmonic motion? a.

\frac{a}{2}

0.4 a

0.6 a

0.2 a

Topic:

Waves & Oscillation

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Question 18

Views: 5,447

A motion which repeats itself after regular interval of time is : a. SHM b. periodic motion c. both (A) and (B) d. none of these.

Topic:

Waves & Oscillation

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Question 19

Views: 5,694

A oscillator of mass 10kg has a velocity of 5

m s^{- 1}

after 1 second of its crossing the mean position. If the time period is 5s. Find the potential energy and kinetic energy at that instant.

Topic:

Waves & Oscillation

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Question 20

Views: 5,197

A particle execute S.H.M from the mean position. Its amplitude is A, its time period is .T.. At what displacement, its speed is half of its maximum speed.a.

\frac{3 A}{2}

\frac{2}{3} A

\frac{2 A}{3}

\frac{3 A}{2}

Topic:

Waves & Oscillation

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