1.

The plates each of area A of a parallel plate caoacitor are given charges Q and -Q. The plates are joined by a non-conducting spring of force constant k. The natural length of the spring is d, the inital separation between the plates. The left plate is connected to a vertical wall through a massless non-conducting rope and the right plate is connected to ablock of mass m through similar rope. Assume the pulley to be massless, neglect dielectric effect of the spring and Q^(2) lt 2mAepsilon_(0)g. If the block is released from rest, the maximum elongation of the string is

Answer»

`(2)/(k)(mg-(Q^(2))/(Aepsilon_(0)))`
`(2)/(k)(mg-(2Q^(2))/(Aepsilon_(0)))`
`(2)/(k)(mg-(Q^(2))/(2Aepsilon_(0)))`
NONE of these

Solution :Time period is not AFFECTED by a constant force acting ALONG the LINE of `SHM`.


Discussion

No Comment Found

Related InterviewSolutions