Rollers support the side blocks vertically The side blocks i

Rollers support the side blocks vertically. The side blocks in turn support the 6 N block via friction. The friction coefficient between the side blocks and the center block is 0.4. (This is the static and kinetic coefficient of friction). What is the vertical component of force exerted by the left block on the center block? (a) 2 N (b) 3 N (c) 5 N (d) 8 N (e) 16

Solution

6 N = 2R

R = 6/2 = 3N

Hence the vertical component of force exerted by the left block on center block is (b) 3 N