A spring oscillating in water is acted upon by an external force Bcosωt . With the passage of time the frequency of the spring tends to be:
(a) greater than ω
(b) less than ω
(c) equal to ω
(d) decreasing exponentially
Correct option (c) equal to ω
Explanation:
When a spring oscillates in water under periodic force F = Bcosωt , the oscillation is like forced oscillation and so after some time the spring oscillate with frequency equal to that of the force.
