Question

a train having 3 compartment having mass of 10 , 3 , 2 kg moving with a force of 100 N find time

Answer 1

Answer:

Consider three compartments as a single compartment of mass (m+m+m)=3m.

so, 3ma=F⇒a= 3mF

here a is the acceleration of the block.

from FBD,

The tension in between B and C is T

BC

=(m+m)a=2m× 3mF = 32F

The tension in between A and B is T

AA=ma=m×

3mF= 3F

∴ T BB TABA = 2F/3F/3 = 2

hence option D

1: 2 is the correct answer pls mark me as brainlist pls ❤️❤️