Question

Same net force is applied on two different objects ofmasses m and 3m. If x and y are the magnitudes oftheir acceleration respectively, then the ratioxywillbe(1) 1 : 3 (2) 1 : 1(3) 3 : 1 (4) 9 : 1

Answer 1

Net force= m*x = 3m*y
mx=3my
x/y = 3m/3
x:y = 3:1

Answer is (3) 3:1

Answer 2

(1) 1:3 
F=MA   GIVEN MASSES M AND 3M RESPCTIVELY.

SO 
MA/3MA  =1:3