Question

The time period of a spring - mass system is T in air when the mass is partially immersed in water the time period of oscillation is 

(A) T 

(B) < T 

(C) >T 

(D) ≤T

Answer 1

Correct Option :- (B) < T

Explanation :-

The time period of the spring mass system in air 

When the mass is immersed in water partially, the buoyent force = ρAxg & the spring force = k.x. when the body is displaced through a small distance x.