Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 32

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In the case of a simple pendulum executing $SHM,$ at $t = 0$ , the bob is not at the mean position. The graph drawn between the tension $(T)$ in the string and time $(t)$ is

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Important Questions on Oscillations

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 33

The time period of a bob performing simple harmonic motion in water is

2 s

. If density of bob is

\frac{4}{3} \times 10^{3} kg m^{- 3}

, then time period of bob performing simple harmonic motion in air will be

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 34

If

x, v

and

a

denote the displacement, the velocity and the acceleration of a particle executing

S H M

of time period

T

. Then, which of the following does not change with time?

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 36

Two simple pendulums of lengths

5 m

and

20 m

respectively are given small displacement in one direction at the same time they will again be in the same sense when the pendulum of shorter length has completed

n

oscillations. Then,

n

is

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 38

A simple pendulum of length

L

has mass

M

and it oscillates freely with amplitude

A

. At the extreme position, its potential energy is (

g

= acceleration due to gravity)

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 39

The function

(\sin ω t - \cos ω t)

represents the S.H.M having a time period

T

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 40

An object was found to make oscillations governed by the equation

y = \cos^{2} (ω t + \frac{π}{4}) - 0.5

. The amplitude and angular frequency of these oscillations, respectively, are

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 41

A simple pendulum oscillates harmonically about

x = 0

with an amplitude

A

and time period

T

. Its speed at

x = A / 2

is

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Physics Crash Course NEET>Chapter 10 - Oscillations>Level 1>Q 42

A body of mass

8 kg

moving with a velocity of

2 {ms}^{- 1}

comes to the rest, after compressing a spring placed on a frictionless table. If the spring constant is

5000 {Nm}^{- 1}

then compression produced in the spring shall be