A small sphere of mass `m = 0.5 kg` carrying a positive charge `q = 110 mu C` is connected with a light, flexible, and inextensible string of length of length `r = 60 cm` and whirled in a vertical circle. If a vertically upward electric field of strength `E = 10^5 NC^-1` exists in the space, calculate the minimum velocity of the sphere required at the highest point so that it may just complete the circle `(g = 10 ms^-2)`.

A small sphere of mass m = 0.6 kg carrying a positive charge q = 80 muC is connected with a light, flexible, and inextensible string of length r = 30 cm and whirled in a vertical circle. If a horizontal rightward electric field of strength E = 10^5 NC^-1 exists in the space, calculate the minimum velocity of the sphere required at the highest point so that it may just complete the circle (g = 10 ms^-2) .

A small sphere of mass m = 0.6 kg carrying a positive charge q = 80 muC is connected with a light, flexible, and inextensible string of length r = 30 cm and whirled in a vertical circle. If a horizontal rightward electric field of strength E = 10^5 NC^-1 exists in the space, calculate the minimum velocity of the sphere required at the highest point so that it may just complete the circle (g = 10 ms^-2) .

Two small particles A and B having masses m = 0.5 kg each and charges q_1 = (-155//18 muC) and q_2 = (+100 muC) , respectively, are connected at the ends of a nonconducting, flexible, and inextensible string of length r = 0.5 m . Particle A is fixed and B is whirled along a vertical circle with center at A. if a vertically upward electric field of Strength E = 1.1 xx 10^5 NC^-1 exists in the space, calculate the minimum velocity of particle B required at the highest point so that it may just complete the circle (g = 10 ms^-2) . .

Two small particles A and B having masses m = 0.5 kg each and charges q_1 = (-155//18 muC) and q_2 = (+100 muC) , respectively, are connected at the ends of a nonconducting, flexible, and inextensible string of length r = 0.5 m . Particle A is fixed and B is whirled along a verticle circle with center at A. if a vertically ipward electric field of Strength E = 1.1 xx 10^5 NC^-1 exists in the space, calculate the minimum velocity of particle B required at the highest point so that it may just complete the circle (g = 10 ms^-2) . .