What is a second's pendulum?

What is a seconds pendulum? What is its approximate length?

What is second's pendulum ? Find the length of second's pendulum for g = 9.8 m//s^(2) ? Also write expressions for the time period if the second's pendulum is an a carriage which is accelerating (a) upwards (b) downwards (c ) horizontally. Also, fin the value of time period of it if is made to oscillate a freely falling lift.

Show that the motion of simple pendulum is simple harmonic and hence derive an equation for its time period.What is Seconds pendulum?

The mass and diameter of a planet are twice those of earth. What will be the period of oscillation of a pendulum on this plenet. If is a second's pendulum on earth?

The pendulum of wall clock is a second's pendulum. The number of oscillations made by it in one day is

At a particular place, a simple pendulum of length 1m, makes 400 oscillations in 13 minute. What is the length of a second's pendulum at this place ?

The length of a second's pendulum on the surface of Earth in 1m. What will be the length of a second's pendulum on the moon?

The length of a second's pendulum on the surface of earth is 1 m. What will be the length of a second's pendulum on the moon?

The periodic time of a second's pendulum as seen by an astronaut in a spaceship is