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The frequency of seconds pendulum is

If gm = ge⁄6, time period of a simple pendulum is 2s and ge = 10ms-2. length of pendulum on moon will be

A copper plate flat pendulum and a copper plate pendulum with slots in it but of same dimension, are made to oscillate in a magnetic field. Then

The length of a simple pendulum executing simple harmonic motion is increased by 21%. The percentage increase in the time period of the pendulum of increased length is

A pendulum clock is observed to give correct time at the equator. What will happen if the same pendulum clock is taken to the pole of the earth

A clock pendulum is adjusted for giving correct time in Patna. This clock pendulum also gives correct time in

The pendulum of lengths 121 cm and 100 cm start vibrating. At some instant, the two are in the mean position in the same phase. After how many vibrations of the shorter pendulum, the two will be in th

A simple pendulum is made of a bob which is a hollow sphere full of mercury suspended by means of a wire. If a little mercury is drained off, the period of the pendulum will

If the mass of bob of simple pendulum is increased by 50%, the time period of the pendulum

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is