Answer to Question #192058 in Mechanics | Relativity for Nicole

Question

When the frictionless system where a 6kg block is pushing a 3kg block is accelerated by an applied force of magnitude F, the tension in the string between the blocks is      

(A) F     (B)  (2/3) F     (C) ½ F     (D) (1/3) F

Answer 1

answer : (b) (2\3) F

ACCORDING TO GIVEN QUESTION FIG. IS:

As we are applying force F (pushing it) on 3 Kg block ,

acceleration of 3 kg block will be

$$a={F\over9}$$

by newtons law T₁=T₂

and T₁ =ma

= 6 X a

=$6 \times {F\over9}$

=${2\over3}F$ .......................answer