Question Library

Using the oscillating simple pendulum above, the maximum kinetic energy is obtained at

If the length of a simple pendulum is 120cm, calculate its frequency [\(\pi\) = \(\frac{22}{7}\) g = 10ms\(^{-2}\)]

A student found out from a simple pendulum experiment that 20 oscillations were completed in 38 seconds.

The angular speed of an object describes a circle of radius 4m with linear constant speed of 10m/s is

Which of the following will reduce the frequency of oscillation of a simple pendulum?

A stone of mass 200 g attached to a string is made to revolve in a horizontal circle of radius 1.5 m at a steady speed of 5 m/s. Calculate the tension in the string at the bottom of the circle.

A particle of mass 3.6 x 10\(^{-6}\)kg revolving around the earth has a radial acceleration of 4.3 x 10\(^7\)ms\(^{-2}\). Calculate the centripetal force of the particle.

A man swung an object of mass 2 kg in a circular path with a rope 1.2 m long. If the object was swung at 120 rev/min, find the tension in the rope.

A simple pendulum, has a period of 5.77 seconds. When the pendulum is shortened by 3 m, the period is 4.60 seconds. Calculate the new length of the pendulum

The motion of a body is simple harmonic if the?

A siren having a ring of 200 hole makes 132 rev/min. A jet of air is directed on the set of holes. Calculate the frequency and wavelength in air of the note produced (take v = 350m/s)

The wavelength of a wave traveling with a velocity of 420 ms\(^{-1}\) is 42 m. What is its period?

A bob of weight 0.1 N hangs from a massless string of length 50 cm. A variable horizontal force which increase from zero is applied to pull the bob until the string makes an angle of 60o with the vertical. The work done is?

I. The motion of the tyres of a moving car. II. The motion of a loaded test tube oscillated vertically. III. The beating of the heart. IV. A stone tied to a string and whirled round. V. The motion of the pistons in a gasoline engine. Which of the motions above is simple harmonic?

What is the frequency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s?