What is the acceleration of the blockandtrolley system shown in a Fig.(a), if the coefficient of kinetic friction between the trolley and the surface is 0.04? What is the tension in the string? (Take g = 10 m s^(-2) ).Neglect the mass of the string.

What is the acceleration of the blockandtrolley system shown in a Fig.

1.	What is the acceleration of the blockandtrolley system shown in a Fig.(a), if the coefficient of kinetic friction between the trolley and the surface is 0.04? What is the tension in the string? (Take g = 10 m s^(-2) ).Neglect the mass of the string.
Answer» SOLUTION : Freebodydiagramof theblock ` 30-T = 3a` Freebodydiagramof thetrolley ` T- f_(K)= 20 a` where` f_k= mu _k N = 0.04xx 20 xx 10=- 8 N` solving(1) & (2), a ` = 0.96m//s^2 and T = 27.2N`