a mass m is attached to a solid support with an ideal spring constant K. The natural frequency of the system is w. If the mass now carries a charge +Q and external electric field E along the axis of the spring is turned on, the frequency for small oscillations
a. becomes zero
b. increases
c. decreases
d. remains unchanged

Question

a mass m is attached to a solid support with an ideal spring constant K. The natural frequency of the system is w. If the mass now carries a charge +Q and external electric field E along the axis of the spring is turned on, the frequency for small oscillations 
a. becomes zero
b. increases
c. decreases
d. remains unchanged

anonymous · Answer

@Vincent-Lyon.Fr

vincent-lyon.fr · Answer

The frequency will remain the same.
Any constant extra force applied to the oscillator has no effect on its frequency.
It only displaces the equilibrium position.