Question

A simple pendulum is having length is less than the second pendulum and a second pendulum starts swinging in aphase they again swing in a phase after an intervals of 18 sec from The rest the period of simple pendulum?????

Answer 1

Answer:

answer is 1.8 seconds .

Answer 2

A simple pendulum is having length is less than the second pendulum and a second pendulum starts swinging in aphase they again swing in a phase after an intervals of 18 sec from rest , then the period of simple pendulum will be 1.8 sec

• As we know that ,   $\frac{1}{T} =\frac{1}{T1}-\frac{1}{T2}$ , where T1 is 2 sec and T2 is time period for simple pendulum.

• According to question, T= 18 sec and T1 = 2 sec
• Putting Values in the equation ,

                                       We get T2 = 1.8 sec