Question

A 0.80 g cork ball with a charge of 1.50

Answer 1

Given that

Length of the pendulum L =0.300m

Acceleration due to gravity g =9.8m/s^2

electric field of magnitude E = 1.00 10⁵ N/C

Electric chaarge is q =1.50*10^-6C.

Mass of the cork ball m = 0.80 g =0.80*10^-3kg

Now substitute all the values we get the  Time period is given by

                                T =2piSqrt(L/(qE/m)  OR    T =2piSqrt(L/((g²+(qE/m)²)^1/2

                                         =0.250s

With the affect of g the time period is T =2piSqrt(L/g) =1.09s