List of top Physics Questions on Pendulums

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The time period of a simple pendulum of length $l$ is $T$. If its length is increased to $4l$, its new time period will be

The time period of a simple pendulum is $T$ in air. When the bob is completely immersed in a non-viscous liquid of density $\rho / 10$ (where $\rho$ is the density of the bob), the new time period of oscillation is:

The time period of a simple pendulum of length $l$ is $T$. If its length is increased to $4l$, its new time period will be

The time period of a simple pendulum is $T$ in air. When the bob is completely immersed in a non-viscous liquid of density $\rho / 10$ (where $\rho$ is the density of the bob), the new time period of oscillation is: [H] [width=0.5\linewidth]{86.png}

% Question A pendulum clock gives correct time at $20^\circ$C. If the coefficient of linear expansion of the pendulum's material is \alpha = 1.2 \times 10^{-5} /^\circC, the clock will lose time per day at $40^\circ$C by approximately:

Savitha notes down the data of time taken to complete 30 oscillations as 60 s and hence calculates the length of the simple pendulum as: (Take $\pi^2 = 9.8$, and $g = 9.8$ m/s$^2$)

The sum of kinetic energy and potential energy of a simple pendulum bob is 0.02 J. The speed of the simple pendulum bob at equilibrium position is approximately: (Consider mass of the bob = 20 g)

A simple pendulum of length \( l \) has a bob of mass \( m \), with a charge \( q \). On it a vertical sheet of charge with surface charge density \( \sigma \) passes through the point of suspension. At equilibrium, if the string makes an angle \( \theta \) with the vertical, then

What is the time period of a simple pendulum of length \(1\ \text{m}\) if \(g = 9.8\ \text{m/s}^2\)?

A pendulum bob has a speed of 4 m/s at its lowest position. The pendulum is 1 m long. When the length of the string makes an angle of 60° with the vertical, the speed of the bob at that position is (acceleration due to gravity, \( g = 10 \, \text{m/s}^2, \cos(60^\circ) = 0.5) \)

The length of the simple pendulum is made 3 times the original length. If \( T \) is its original time period, then the new time period will be

A simple pendulum oscillates with an angular amplitude \( \theta \). If the maximum tension in the string is 4 times the minimum tension then the value of \( \theta \) is

Two simple pendulums have (A) mass $M_1$, length $L_1$ and (B) mass $M_2$, length $L_2$. Given $M_1 = M_2$ and $L_1 = 2L_2$. If their total energies are same, then \dots

At a place, the length of the oscillating simple pendulum is made $1/4$ times keeping amplitude same then the total energy will be ______.

The ratio of the frequencies of two simple pendulums is 4 : 3 at the same place. The ratio of their respective lengths is ______.

A simple pendulum is suspended from the ceiling of a lift. When the lift is at rest, its period is 'T'. With what acceleration 'a' should the lift be accelerated upward in order to reduce the period to $T/2$?

If the length of the oscillating simple pendulum is made $\frac{1}{3}$ times the original keeping amplitude same then increase in its total energy at a place will be}

Time period of a simple pendulum on earth's surface is ' $T$ '. It time period becomes ' $xT$ ' when taken to a height ' $2R$ ' above earth's surface. The value of $x$ will be ($R = \text{radius of earth}$)

For smaller angular displacement, the period of a simple pendulum depends on

If the length of the oscillating simple pendulum is made $\frac{1}{3}$ times the original keeping amplitude same then increase in its total energy at a place will be}

Time periods of pendulums \( A \) and \( B \) are \( T \) and \( \frac{5T}{2} \). If they start executing S.H.M. at the same time from the mean position, the phase difference between them after the bigger pendulum has completed one oscillation is

A bob of a simple pendulum has a mass of \( 4 \, g \) and a charge of \( 20\mu C \). If it is at rest in a uniform horizontal electric field of intensity \( 1000 \, V m^{-1} \), the angle that the pendulum makes with the vertical at equilibrium is: