Consider a pair of identical pendulums, which oscillate with equal amplitude independently such that when one pendulum is at its extreme position making angle of `2^@` to the right with the vertical, the other pendulum makes and angle of `1^@` to the left of the vertical. What is the phase difference between the pendulums?

Two simple pendulums of equal lengthcross each other at mean position. What is their phase difference?

A simple pendulum moves from one end to the other in 1/2 second. What is the frequency?

A pendulum bob of mass 80 mg and carrying a charge of 2xx10^-8 coulomb is at rest in a horizontal uniform electric field of 20,000 V m^-1 . Find the tension in thread of the pendulum and the angle it makes with the vertical.

The stone of mass 100 g is suspended from the end of a weightless string of length 100 cm and is allowed to swing in a vertical plane.The speed of the mass is 2 m s^-1 when the string makes an angle of 60^@ with the vertical .Calculate the tension in the string at theta = 60^@ .Also,caculate the speed of the stone when it is in the lowest poition. (g=9.8 m s^(-2) ) .

What is a simple pendulum? Obtin expression for its angular acceleration. When its bob is diplaced through an angle.

A pendulum is suspended from the roof of a car. The car is moving with an acceleration of 4.9 m s^-2 .Then angle to which the vertical string will be inclined is :

The bob of a pendulum is released from a horizontal position. If the length of the pendulum is 1.5 m, what is the speed with which the bob arrives at the lowermost point, given that it dissipated 5% of its initial energy against air resistance ?

We call angle 1 and angle 3, a pair of vertically opposite angles. Can you name the other pair of vertically opposite angles ? Does angle 1 appear to be equal to angle 3? Does angle 2 appear to be equal to angle 4 ?

Two pendulums with identical bobs and lengths are suspended from a common support such that in rest position the two bobs are in contact. One of the bobs is eleased after being displaced by 10^@ so that it collides elastically head-on with the other bob. Draw a graph showing variation in energy of either pendulum with time, for 0le t le 2T , where T is theh period fo each pendulum.

The time t of a complete oscillation of a simple pendulum of length l is given by the equation T=2pisqrt(1/g) where g is constant. What is the percentage error in T when l is increased by 1%? Comment the above result.