Question

A spring mass system as shown in figure is suspended in a constant electric field E. A charge q is given to the mass.

• A. Time period of oscillation of the system is 2$\pi$ $\sqrt{m/k}$
• B. Time period of oscillation of the system is 2$\pi$ $\sqrt{mg-qE/k}$
• C. The elongation is the spring in equilibrium position will be mg - qE/k
• D. The elongation is the spring in equilibrium position will be mg/k

Answer 1

Answer: (A), (C)

The correct options are
A Time period of oscillation of the system is 2$\pi$ $\sqrt{m/k}$
C The elongation is the spring in equilibrium position will be mg - qE/k