The time period of a simple pendulum is 4.25. When its length is decreased by 1m its period is 3.75. Find the original length of the pendulum.

Find the expression of time period of a simple pendulum of length l.

What is the time period of a simple pendulum in a freely falling lift'?

The length of a simple pendulumis increased by 1%. Its time period will

The length of a metal is l_1 when the tension in it is T_2 and is l_2 when the tension is T_2 . Find the original length of the wire.

The perimeter of a rectangle is 200 cm. If its length is three times of its breadth, find the length and breadth of the rectangle.

The breadth of a rectangle is 5 cm. and its area is 100 m^2 . Find the length of the rectangle.

The time period of a simple pendulum inside a stationary lift is T. If the lift starts. moving upwards with an acceleration of g/3 what will be its time period ?

The area of a trapezium is 34m^2 and the length of one of the parallel sides is 10 cm and its height is 4 cm. Find the length of the other parallel side.

A brass rod of length 50 cm and diameter 3.0 mm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250 ^@C , if the original lengths are at 40.0 ^@C ? Is there a ‘thermal stress’ developed at the junction? The ends of the rod are free to expand (Co-efficient of linear expansion of brass = 2.0 xx 10^-5K^-1 steel = 1.2 xx 10^-5 K^-1) .

If the tension of the wire is increased four times and its length reduced to half the original length the frequency of vibration