Question

There are 3 boxes of mass 8.6 kg, 4.7 kg, and 1.7 kg respectively. The 8.6 kg box is on a flat table with a coefficient of friction of 0.35. It is attached to a string which is attached to a pulley with a 4.7 kg box attached to the string. There is another string attached to the 4.7 kg box which attaches to a 1.7 kg box. Find the acceleration of the 8.6 kg box and the tensions of the two strings.