Question

9. A mass m, is moving on a plane surface along a
straight path under the action of a force F. Another
mass m, is added on to m, and the acceleration drops
to 1/5 of the earlier value of the acceleration.
Assuming that Fremains constant, what is the ratio
mm,?
(a) 1/6
(b) 1/5
(c) 1/4
(d) 4/5

​

Answer 1

acceleration in a

=25/m1

acceleration in b

=25/m2

therefore A/B

=m1/m2=4:3

now when force is increased to 30N

acceleration in A

=30/m1

acceleration in B

=25/m2

A/B=m2/m1

=4/3

the diff=0