A pendulum 1 m long makes 20 vibrations in 40s. Find the time taken to make 30 vibrations, if its length is increased to 4 m.

The time taken by a pendulum to complete 25 vibrations is 88.0 s. Find the time period of the pendulum in second upto appropriate significant figures.

The time taken by a pendulum to complete 25 vibrations is 88.0 s. Find the time period of the pendulum in second upto appropriate significant figures.

The effective length of a simple pendulum is 1 m. The pendulum completes 20 oscillations in 40 s. What is the value of acceleration due to gravity at that place?

Two pendulums differ in lengths by 22m . They oscillate at the same place so that one of then makes 30 oscillations and the other makes 36 oscillations during the same time. The length ( in cm) of the pendulum are :

Two pendulums differ in lengths by 22m . They oscillate at the same place so that one of then makes 30 oscillations and the other makes 36 oscillations during the same time. The length ( in cm) of the pendulum are :

Two pendulums differ in lengths by 22m . They oscillate at the same place so that one of then makes 30 oscillations and the other makes 36 oscillations during the same time. The length ( in cm) of the pendulum are :

A 150m long train is moving with constant velocity of 12.5 m/s. Find The time taken to cross the bridge of length 850m is?

When the amplitude of vibrations of a simple pendulum is increased, then its time-period :

A 12 m long vibrating string has the speed of wave 48 m/s . To what frequency it will increase .