Question

A mass M suspended by a spring with force constant k has a period T when set into oscillation on Earth. Its period on Mars, whose mass is about 1/9 and radius 1/2 that of Earth, is most nearly

(A) T/3 

(B) 2T/3 

(C) T 

(D) 3T/2 

(E) 3T

Answer 1

Correct option (C) T

Since this is a mass spring, only the attached mass and k affect the period and both are the same.