Block A is placed on cart B as shown in figure . If the coefficientof static and kinetic friction between the 20 kg block A and 100 kg cart Bare both essentially the same value of 0.5 : (g = 10 m//s^(2))

Block A is placed on cart B as shown in figure . If the coefficientof

1.	Block A is placed on cart B as shown in figure . If the coefficientof static and kinetic friction between the 20 kg block A and 100 kg cart Bare both essentially the same value of 0.5 : (g = 10 m//s^(2))
Answer» the blocks A and B will have a common acceleration if P = 60 N acceleration of CART B is `0.98 m//s^(2)` if P = 40 N acceleration of cart B is greater than that of A is P = 60 N the common acceleration of both the blocks is `0.667 m// s^(2) ` if P = 40 N Solution : `2P - f_(1)= 20 xx a"" ……(i) ` As `"" 2P = (120) xx a "" …..(ii) ` `a = (P)/(60)` `2P - (5)/(10)xx 200 = 20 xx (P)/(60)` `2P - (P)/(3) = 100` `(5P)/(3) = 100` `P = 60 N`