Question

(c)
67. If coefficient of friction between all surfaces is 0.4,
then find the minimum force F to have equilibrium of
the system. (Take, g = 10 ms -2)
25 kg
15 kg
Wall
F
(a) 62.5 N
(c) 135 N
(b) 150 N
(d) 50 N​

Answer 1

Explanation:

Br_^Br+^ Br is the correct order of size among Br,Br+and Br- .