The uniform stick of mass m length L is pivoted at the centre. In the equilibrium position shown in the figure, the identical light springs have their natural length. If the stick is turned through a small angle , it executes SHM. The frequency of the motion is:
(1)
(2)
(3)
(4) None of these
A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum, its acceleration vector is correctly shown in:
1. | 2. | ||
3. | 4. |
There is a simple pendulum hanging from the ceiling of a lift. When the lift is stand still, the time period of the pendulum is T. If the resultant acceleration becomes g/4, then the new time period of the pendulum is
(1) 0.8 T
(2) 0.25 T
(3) 2 T
(4) 4 T
A man measures the period of a simple pendulum inside a stationary lift and finds it to be T sec. If the lift accelerates upwards with an acceleration , then the period of the pendulum will be
(1) T
(2)
(3)
(4)
The bob of a pendulum of length l is pulled aside from its equilibrium position through an angle and then released. The bob will then pass through its equilibrium position with a speed v, where v equals
(1)
(2)
(3)
(4)
In a simple pendulum, the period of oscillation T is related to length of the pendulum l as:
1. = constant
2. = constant
3. = constant
4. = constant
A pendulum has time period T. If it is taken on to another planet having acceleration due to gravity half and mass 9 times that of the earth, then its time period on the other planet will be:
1. | \(\sqrt{\mathrm{T}} \) | 2. | \(T \) |
3. | \(\mathrm{T}^{1 / 3} \) | 4. | \(\sqrt{2} \mathrm{~T}\) |
A simple pendulum hanging from the ceiling of a stationary lift has a time period T1. When the lift moves downward with constant velocity, then the time period becomes T2. It can be concluded that:
1. | \(T_2 ~\text{is infinity} \) | 2. | \(\mathrm{T}_2>\mathrm{T}_1 \) |
3. | \(\mathrm{T}_2<\mathrm{T}_1 \) | 4. | \(T_2=T_1\) |
If the length of a pendulum is made 9 times and mass of the bob is made 4 times, then the value of time period will become:
1. 3T
2. 3/2T
3. 4T
4. 2T
A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s2 at a distance of 5 m from the mean position. The time period of oscillation is:
1. | 2 s | 2. | s |
3. | 2 s | 4. | 1 s |