Q5.15 Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force F = 600 N is applied to (ii) B along the direction of the string. What is the tension in the string in each case?
We will consider A and B in a system. So total mass in the system is = 10 + 20 = 30 Kg.
Thus acceleration of the system is given by :
or
When force is applied at block B :
Using Newton's law of motion, we can write
or
Thus