A 16.0 kg box resting on a horizontal, frictionless surface is attached to a 7.00 kg weight by a thin, light wire that passes over a frictionless pulley, as shown in the figure below. The pulley has the shape of a uniform solid disk of mass of 2.80 kg and a diameter of 0.700 m. After the system is released, find the x-component of the acceleration of the box.

  

Box's Acceleration:

The rate at which a box's velocity changes is acceleration in mechanics. Box's acceleration is a vector quantity. The direction of the net force acting on the box determines the direction of its acceleration and measured in $m/s2$.
 

16.0 kg X 7.00 kg