HARD

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Plot the graph of potential energy versus time for simple harmonic motion.

Important Questions on Oscillations

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

An object of mass

0.5 kg

is executing simple harmonic motion. It amplitude is

5 cm

and time period (T) is

0.2 s

. What will be the potential energy of the object at an instant

t = \frac{T}{4} s

starting from mean position. Assume that the initial phase of the oscillation is zero.

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A particle is executing simple harmonic motion with a time period

T

. At time

t = 0

, it is at its position of equilibrium. The kinetic energy - time graph of the particle will look like:

EASY

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

For what value of displacement the kinetic energy and potential energy of a simple harmonic oscillation become equal?

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A body is executing simple harmonic motion with frequency

n

, the frequency of its potential energy is

EASY

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

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)

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A particle starts executing simple harmonic motion

(SHM)

of amplitude

a

and total energy

E .

At any instant, its kinetic energy is

\frac{3 E}{4}

, then its displacement

y

is given by:

EASY

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A body is executing S.H.M. Its potential energy is

E_{1}

and

E_{2}

at displacements

x

and

y

respectively. The potential energy at displacement

(x + y)

EASY

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A particle executing simple harmonic motion along a straight line with an amplitude

A

, attains maximum potential energy when its displacement from mean position equals

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A potential is given by

V (x) = \frac{k (x + a)^{2}}{2}

for

x < 0

and

V (x) = \frac{k (x - a)^{2}}{2}

for

x > 0

. The schematic variation of oscillation period

T

for a particle performing periodic motion in this potential as a function of its energy

E

is:

EASY

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

The physical quantity conserved in simple harmonic motion is

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

For a body executing S.H.M. :
(a) Potential energy is always equal to its

K . E .

(b) Average potential and kinetic energy over any given time interval are always equal.
(c) Sum of the kinetic and potential energy at any point of time is constant.
(d) Average

K . E .

in one time period is equal to average potential energy in one time period.
Choose the most appropriate option from the options given below :

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A particle is executing simple harmonic motion

(S H M)

of amplitude

A,

along the

x

-axis, about

x = 0 .

When its potential Energy

(P E)

equals kinetic energy

(K E),

the position of the particle will be:

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A mass of $5 kg$ is connected to a spring. The potential energy curve of the simple harmonic motion executed by the system is shown in the figure. A simple pendulum of length $4 m$ has the same period of oscillation as the spring system. What is the value of acceleration due to gravity on the planet where these experiments are performed ?

Question Image

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

In a simple harmonic oscillation, what fraction of total mechanical energy is in the form of kinetic energy, when the particle is midway between mean and extreme position.

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A particle of mass

1 kg

is hanging from a spring of force constant

100 N m^{- 1} .

The mass is pulled slightly downward and released so that it executes free simple harmonic motion with time period

T .

The minimum time when the kinetic energy and potential energy of the system will become equal, is

\frac{T}{n} .

The value of

n

is ________.

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

The displacement of a particle in simple harmonic motion (SHM) is given by

y = \sqrt{3 π} \sin (\frac{100}{π} t + \frac{π}{4}) .

What will be the displacement of the particle from the mean position when its kinetic energy is eight times that of its potential energy?

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

A body of mass

1 kg

is executing simple harmonic motion (SHM). Its displacement

y

(in

cm

) at time t given by

y = [6 \sin (100 t + \frac{π}{4})] cm .

Its maximum kinetic energy is

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

The total energy of a body executing simple harmonic motion is

E

. The kinetic energy when the displacement is

1 / 3

of the amplitude

MEDIUM

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

The maximum value attained by the tension in the string of a swinging pendulum is four times the minimum value it attains. There is no slack in the string. The angular amplitude of the pendulum is

HARD

Physics>Oscillations and Waves>Oscillations>Energy in Simple Harmonic Motion

For a simple pendulum, a graph is plotted between its kinetic energy (K.E.) and potential energy (P.E.) against its displacement d. which one of the following represents these correctly? (graphs are schematic and not drawn to scale)

Plot the graph of potential energy versus time for simple harmonic motion.

Important Questions on Oscillations

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