Question

Calculate the acceleration of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is 0.05. (g = 10 m/s², mass of the string is negligible and no other friction exists).

(1) 1.00 m/s²

(2) 1.25 m/s²

(3) 1.50 m/s²

(4) 1.66 m/s²

Answer 1

Ans 3

F - fr = ma

20 - 0.05*100 = 10a

a = 1.5m/s

Comments

Wrong answer