An isolated charge `q_(1)` of mass m is suspended freely by a thread of length l. Another charge `q_(2)` is brought near it `(rgtgtl)`. When `q_(1)` is in equilibrium tension in thread will be

An isolated charge q_(1) of mass m is suspended freely by a thread of length l. Another chaarges q_(2) is braought near it (rgtgtl) . When q_(1) is in equilibrium tension in thread will be

A small sphere of mass m is supended by a thread of length l. It is raised upto the height of suspension with thread fully stretched and released. Then, the maximum tension in thread will be

A positive point charge q is brought near a neutral metal sphere.

A charge q_(1) exerts some force on a second charge q_(2) If a third charge q_(3) is brought near q_(2) , then the force exterted by q_(1) on q_(2)

A small cork ball A of mass m is suspended by a thread of length I. Another ball B is fixed at a distance I from point of suspension and distance l/2 from thread when is vertical, as shown in figure-1.444. Balls A and B have charges (+ q) each. Ball A is held by an external force such that the thread remains vertical. When ball A is released from rest, thread deflects through a . maximum angle of beta = 30^(@) , calculate m in terms of other parameters

A simple pendulum of mass m and charge +q is suspended vertically by a massless thread of length l. At the point of suspension, a point charge +q is also fixed. If the pendulum is displaced slightly from equilibrium position, its time period will be

A particle of mass m and charge q is suspended from a point A with a silk thread of length l. Another particle of charge -q is fixes at a distance I from the point A such that point A and the charge -q lie in same horizontal plane. If at equilibrium , the thread makes angle 30^(@) with vertical, find the mass m and tension in the thread . ( Take acceleration due to gravity as g).

Two identical tennis balls each having mass 'm' and charge 'q' are suspended from a fixed point by threads of length 'l'. What is the equilibrium separation when each thread makes a small angle 'theta' with the vertical ?