Two blocks of equal mass m are tied to each other through a light string . One of the blocks is pulled along the line joining them with a constant force F . Find the tension in the string joining the blocks.

Answer 1

F=totalmass*a
F=(2M)a
a= F/2M

but this is the a for each block, so the tension pulling the second block is

tension= ma= m(F/2m)=1/2 F