The bob of a pendulum of mass m , suspended by an inextensible string of length L as shown in the figure carries a small charge a . An infinite horizontal plane conductor with uniform surface charge d

Question

The bob of a pendulum of mass m , suspended by an inextensible string of length L as shown in the figure carries a small charge a . An infinite horizontal plane conductor with uniform surface charge density σ is placed below it. What will be the time period of the pendulum for small amplitude oscillations?

TestHub · Accepted Answer

∴ Apparent weight of the bob, w ′ = m g − qE m y ′ = m g − qE ∴ g ′ = g − m qE ​ Time period of a pendulum. T = 2 π g e ff ​ L ​ ​ = 2 π g − m qE ​ L ​ ​ = 2 π ( g − ε 0 ​ m q σ ​ ) L ​ ​

Physics - SHM Question with Solution | TestHub

Options:

Doubts & Discussion